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银行专业初级《法律法规》模考试卷3试卷及答案分享-k8凯发

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作者2023-07-14 16:13:17尔雅答案 78 ℃0 评论

把某一种高级语言程序等价地转换成另一种低级语言程序的程序是( )

以下哪个阶段是输入源程序,对源程序进行扫描和分解,识别出单词符号。( )

语法分析阶段采用的描述工具是( )

中间代码产生阶段对各类不同语法范畴按以下哪个规则进行初步翻译。( )

文法产生式形如:a®b,其中:aî vn;bî(vtèvn)*,则该文法为( )

算符文法g中含有形如p→…ar…的产生式,而r =>b…或r =>qb…,则a和b的优先级为( )

在属性文法中,仅仅使用综合属性的属性文法称( )

以下四个选项不属于三地址码的是( )

编译过程中,把有关数组信息记录在( )

一个文法①不含左递归,②文法中的每个非终结符a的各产生式的候选首字符集两两不相交,③若文法的非终结符a的首字符集含有ε,则first(a)∩fllow(a)=φ,满足上述条件的文法是()文法

解释程序是把源语言写的源程序作为输入,不产生______,边解释边执行源程序。

_______是指规范句型的一个前缀,这种前缀不含句柄之后的任何符号。

属性文法中,________适合于一遍扫描的自下而上分析。

一个确定有限自动机dfa m=(s,∑,δ, s0 ,f),其确定性表现在映射δ:s×σ→s的______。

自下而上语法分析时,若采用算符优先分析,每步归约的是最左素短语,而采用lr分析技术时,每步归约的是_______。

写出句型i1*i2 i3的短语、直接短语和句柄。 g(e): e ->t | e t t -> f | t*f f -> (e) | i

能够把某一种语言程序转换成另一种语言程序,而后者与前者在逻辑上是等价的,这种程序叫做( )

对于pascal语句:for i=0 to 100 do 识别出的一个个单词符号,这项工作由()阶段完成。

以下哪个阶段是输入源程序,对源程序进行扫描和分解,识别出单词符号。( )

在词法分析的基础上,把单词符号串分解成各类语法单位是( )

词法分析遵循的原则是( )

一个文法①不含左递归,②文法中的每个非终结符a的各产生式的候选首字符集两两不相交,③若文法的非终结符a的首字符集含有ε,则first(a)∩fllow(a)=φ,满足上述条件的文法是()文法

对于下面的语法树,其句柄是()

若有表达式a*b/c,则第一个“*”和第二个“/”的优先关系是()

在lr分析表中符号“r3”表示的动作是()

在c语言中,用malloc函数申请的存储区域是在哪个内存区域中()

以下四个选项中全部属于c语言的内存分配策略的是()

当一个文法满足ll(1)文法时,我们可以对文法的每一个非终结符构造一个过程,这些过程是( )

算符文法g中含有形如p→…ar…的产生式,而r*b…或r*qb…,则a和b的优先级为( )

对四元式a:=b op c,若b和c是常数,或者到达它们的b和c的定值点都在循环外,则称为( )

为文法中每个产生式配上一组语义规则,在语法分析的同时执行语义规则是( )

在属性文法中,仅仅使用综合属性的属性文法称( )

文法产生式形如:a®b,其中:|a|£|b|,s®e例外,则该文法为( )

以下四个选项不属于三地址码的是( )

以下四种参数传递方式,一个形参对应两个不同的存储单元的是( )

在符号表中,内情变量存放的信息,是( )的信息

解释程序是把源语言写的源程序作为输入,不产生 ,边解释边执行源程序。

是指规范句型的一个前缀,这种前缀不含句柄之后的任何符号。

一个确定有限自动机dfa m=(s,∑,δ, s0 ,f),其确定性表现在映射δ:s×σ→s的 。

自上而下分析法采用 、归约、错误处理、接受等四种动作。

在自上而下的分析中,左递归包含直接左递归和__________

__________是与源语言有关但与目标机无关的部分组成。

把一个文法改造成任何非终结符的所有候选式首字符集两两不相交的方法是 。

优化的原则应遵循_______的原则。

目标代码的形式可以是_______代码或可重定位的指令代码或汇编指令代码。

令文法g为: e®t|e t|e-t t®f|t*f|t/f f®(e)|i 请给出i (i*i)的最左推导

dfa m=({0,1,2,3},{a,b},f,0,{3}), 其中:f定义如下: f(0,a)=1 f(0,b)=2 f(1,a)=3 f(1,b)=2 f(2,a)=1 f(2,b)=3 f(3,a)=3 f(3,b)=3 请画出上述dfa的状态转换图。

写出句型i1*i2 i3的短语、直接短语。 g(e): e ® t | e t t ® f | t*f f ® (e) | i

you’d better finish your self-introduction within _________.

what are the basic elements in a resume?

which of the following should not be highlighted in your self-introduction?

in the mode of “star”, the letter “s” stands for ________.

when you are asked “why do you apply for this post?” in the job interview, the interviewer is actually asking about ________.

which of the following should you do in the job interview?

how to describe our relevant skills, qualifications, experiences, achievements and rewards in the resume?

in the mode of “star”, the letter “a” stands for ________.

which of the following is not a frequently-asked question in the job interview?

when making a resume, you can put your job intention _________.

we can apply for different positions with the same resume.

in your self-introduction you should introduce your own achievements instead of your team achievements.

during the job interview, we can ask the interviewer directly our future salary or promotion since we are really interested in it.

as for the length of a resume, the longer the better.

don’t speak with too much facial expression and too many gestures in the job interview.

if the ownership of the companies is not open to the public, we call them _______.

which of the following statements is not the advantage of working for a state-owned company?

which of the following competencies are not included in the “4cs” of core competencies?

the functions of personnel department may exclude _______.

which of the following statement is not correct for a ceo of a publicly held company?

which of the following statement is not correct for a publicly held company?

which of the following statement is not correct for a company structure?

some companies are ‘not-for-profit’ which provide much required services to those in need, and derive from the following organizations except _______.

the following statements are usually related to language competence except _______.

the followings are responsibilities of a sale manager except _______.

the classification of company is based on the different types of ownership of the company, and also the aims and objectives of the owners.

most of the influential top revenue enterprises belong to the type of closely held company.

within a business, an organizational structure allows people to know exactly who is in charge of whom and what any given person’s responsibilities are.

a job title can either describe the level of the position, or the responsibilities of the position.

5. a company structure chart will show the jobs, listed by job title, the reporting structure, and company management.

we should not say “________” when we answer the phone.

if the one you want is not available on the phone, you can take a message by leaving some basic information except ________.

if there is something wrong with the phone or telephone line when you make a call, you can use the following expressions except _____.

if you ask for someone during a business call, you can use the following expressions except _______.

when introducing yourself, you should not say: “__________.”

at the beginning of a business call, you should introduce yourself by _______.

during the business call, if you are not so sure about the information, you can say the following sentences except ________

you can end a business call by using the following expressions except _______.

when making preparations for a business call, which of the following is not right?

a business call should not be longer than 1 minute.

during the business call we should stick to the subject and do not allow the conversation to drag out with meaningless chatter.

when you feel necessary to make a business call, pick up your phone immediately in case that you forget.

you should try to speak as loud as possible on the phone so as to make yourself heard clearly.

in business calls if the person you want is not available, try to leave a message as detailed as possible.

the following is a checklist of major elements essential for meeting effectiveness except _______.

the _____ is responsible for seeing that the planning gets done, not necessarily for doing it.

there are some of the drawbacks of meetings except ________.

_____ may record review of the past activities, new decisions and polices, and provide the decision-making process.

_____ is a written record to be kept for future reference.

during the meeting, what should a chairperson first do?

the following are why meetings are held except _______.

contact can be as simple as sending everyone a friendly reminder through office e-mail, phone calls, or a post card reminder through the mail.

as a chairperson, before holding a meeting, you needn’t decide who should attend and what the purpose of the meeting is.

it is ok that you begin a meeting five to seven minutes after it was scheduled.

it is not necessary to stick to the agenda during the meeting.

a well-planned agenda, posted ground rules, and using a bin can help meeting run effectively.

the first step in planning a business trip is to ____________.

if there is no flight or ticket available in your request, you can ask for other choices by saying “_______”.

four aspects are usually considered by the travelers when choosing a hotel: atmosphere, location, services and ______.

while receiving visitors, a receptionist should first find out _________.

the receptionist should keep a register which includes date, time, name and ________.

first impressions can help to do the following things except ___________.

which topic is traditionally taboo when talking to strangers?

many corporate guests like to eat in their hotel rooms so they can ________.

the business center at the hotel ________.

if you really need to go on a business trip, consider the following to plan an efficient trip, except _______.

before you start your business trip, to make a art planning is very essential.

all the countries have the same stipulations on the items to be declared.

while checking in, you can’t have any special requirements for the room.

while receiving visitors, the receptionist should introduce the executive to the visitor first.

while having all talk with the visitor, remember to choose safe topics for your talk.

in the first place, the speaker should do the__________in the company presentation.

this sentence good morning and thank you for making the effort to be here with us today. please allow me to briefly introduce myself. my name is.... is the sample for presenter to do________in the company presentation.

to be effective, the speaker’s message must be passed to the listeners which means__________.

for the use of language, attention the following points: vocabulary, grammar, pronunciation, fluency and ________.

in the very beginning, a brief introduction is always given. it should include at least four pieces of information: what you’re going to talk about; how long you’ll take; _____________; whether you’d welcome questions during your talk, or only at the end.

when describing graphs and trends, the line graphs, bar graphs, _________are the most favorable options.

which of the following can help to encourage the audience’s attention?

the following items should be included in the body of a company presentation except ________.

the following tips can help you to avoid being nervous before giving a presentation except _________.

a company presentation refers to a spontaneous speech given to the target consumer for marketing purposes on behalf of listener’s own company.

the basic elements in a company presentation could make sure it is an effective presentation.

the speaker should be responsible for the content and clarity in a company presentation.

body language and eye contact are called nonlinguistic techniques.

company history, location and key personnel can’t be omitted in the company presentation.

before a product presentation, the presenter should have a clear idea about the _______ of the presentation.

understanding the customers’ _______ is important to a successful product presentation.

how to keep a product presentation short?

what should be avoided when giving a product presentation?

which of the following is not the way to keep a presentation “real”?

which can help to attract the audience’s attention when giving a product presentation?

usually a formal product presentation includes 6 parts: introduction, outline, body, summary, conclusion and question & answer session.

a good product presentation should be given from the point of view of the buyers.

when giving a product presentation, the presenter usually introduces such information as outlook, size, weight, material, features functions, price, guarantee and warranty.

it is unnecessary to have practice before giving a product presentation.

when giving a product presentation, eye contact may help to attract the audience’s attention.

which of the following statement related to the three elements in a balance sheet is not true?

the following statements are usually related to the features of a good business presentation except ______.

for every business, which of the following is not included in the three important financial statements?

suppose you are the manager of a chinese company preparing for an interview with a foreign reporter about the company’s business performance, select the items that you would not like to cover in the interview.

________________measures the profitability of the company during the year. it shows the difference between revenues and expenses.

_________________is a record of the actual changes in cash compared to the income statement. it shows you where the cash was brought in and where the cash was diursed.

________________are outflows from delivering or producing goods or services that constitute the entity’s ongoing major or central operations.

_________________create revenues, expenses, gains and losses.

_________________ increase and decrease long-term assets.

which of the following statement does not describe changes and trends of the company performance?

for publicly held companies, periodic financial reports are required by law.

when an investor understands the income and expense components of the income statement, he or she can appreciate what makes a company profitable.

expenses are outflows of economic resources including cost of goods sold, selling, general and administrative expenses, tax expense, interest expense, etc.

cash flow statement is a record of the actual changes in cash compared to the income statement. it shows the firm’s cash inflows and outflows from operations as well as its investments and financing activities.

before you deliver a speech to introduce business performance, you should know your material, statistical documents of your company.

usually, trade fairs can only be attended by _____ and members of the press.

for many companies, exhibiting at the right trade fairs offers a unique opportunity to expand their business ideas, increase_____ and attract more customers.

it will be quite enough, if you just _____ me a line about things like the discount in the course of the next two weeks.

in order to _____business, we are prepared to cut down our price by 5%.

the key to finding the best fairs lies in finding the ones that pulls in the most _____ for your industry.

if you are a seller at a trade fair, qualify the lead by asking _____ questions.

if your quotation is competitive, we intend to _____300 sets butterfly brand sewing machines.

it is necessary to _____ the specification ____ the requirements.

exhibitors always sell more products at trade fairs than sales calls.

it takes a comparatively short time to reach the customers at trade fairs.

the most valuable thing a trade fair provides is more profits.

before sending your booth staffers, you need to first consider the weather of the place where the trade show is held.

an indication of the space required is not usually necessary for registration.

expressions such as “reference price”, “subject to our final confirmation”, “subject to unsold” can be found in a _______ offer.

_____ receipt of your instructions we will send the goods.

our company mainly trade _____ cotton piece goods.

it is our hope to promote, _____joint efforts, both trade and friendship to our mutual advantage

we shall appreciate _____ this matter your serious consideration.

_____ now exceeds _____ on our market.

please quote us your lowest _____ for walnuts.

we can _____ you 250 metric tons of groundnuts at $1,800 net per m/t c&f emp for shipment in october.

we believe this new products of ours will appeal _____ your customers.

in reply to your letter of august 15, we are giving you an offer _____.

in international trade, an inquiry is usually made by a prospective buyer without engagement.

fob is a trade term requiring the seller to deliver the goods to a named port designated by the buyer.

cif is a trade term requiring the seller to arrange the carriage of goods by sea to a port of destination, and provide the buyer with documents necessary to obtain the goods from the seller.

in fas, the seller fulfills his/her obligations to deliver when the goods have passed over the ship’s rail.

usually there are two kinds of offers. one is firm offer, the other is non-firm offer.

when buyers are not so familiar with the new products or not so convinced by the reputation of the seller, they will make an initial attempt by ordering a all quantity of certain products, which is known as ___________.

__________ is a definite promise to sell goods at the stated prices, usually within a stated period of time.

__________ is not binding upon the sellers, and can be changed or withdrawn by the seller.

______ is an agreement that creates an obligation, which is binding, legally enforceable between two or more competent parties.

in business letters, _____________ is below the complimentary close.

which of the following is not a phrase in the negotiation process? ______

when writing a business letter, we should be _____________.

in business letters, “yours sincerely” belongs to ____________.

generally speaking, ___________ will follow if the initial order or the trial order is satisfactory to both parties.

in the general trading process, the seller makes an inquiry with which the buyer makes an offer.

generally speaking, further orders will follow if the initial order or the trial order is satisfactory to both parties.

when writing business letters, we must emphasize one or two important things and make our main idea clear.

negotiation is often conducted by putting forward a position and making concessions to achieve an agreement.

during a business negotiation, we should never compromise in any area.

in payment in advance method, the entire risk is put on_______.

under payment in advance, the importer makes ________ to the supplier before the shipment of goods is done.

which payment does not offer the seller any protection in case of non-payment?

in _______, the sale transaction is settled by the bank through an exchange of documents

in ___________, the buyer’s bank undertakes to pay the seller when the terms and conditions have been met.

in order for the payment to occur, ______ has to present the necessary shipping documents confirming the delivery of goods within a given time frame.

in l/c transaction, ______ forwards the l/c to the ________ in the seller’s country.

in the end of l/c transaction, ________ debits the buyer’s account and releases the relevant documents so that the buyer can claim the goods from the carrier.

if payment of export trade is made by letter of credit, ________ , on receiving the relevant l/c, should first of all make a thorough examination to see whether the clauses set in the l/c are in full conformity with the terms stated in the sales contract.

when checking the l/c, the seller needs to focus on the following provisions except__________.

payment in advance does not involve any commercial bank and is therefore expensive.

open account payment takes place when either the importer has a strong credit history or is well-known to the seller.

collection can be ided into d/p and d/d.

remittance and collection belong to commercial credit, and letter of credit belongs to banker’s credit.

in l/c transactions, the banker is responsible for paying money and tendering documents on behalf of both sides.

which of the following factors will not influence the determination of delivery time?

which type of transportation is appropriate for perishable or seasonal goods?

normally, the l/c should reach the seller at least ______ days before the date of shipment.

which of the following is the synonym of “advance” in the phrase “advance the delivery”?

in deciding the date for shipment, considerations must be given to the following except _______.

which of the following ports of destination is specific?

which of the following words is wrong in spelling?

from the statement “shipment during march to june in four equal monthly lots”, we can see the shipment _______.

the first procedure involved in the process of delivery is _________.

the following are the ways of stipulating the date of delivery except ________.

quality of goods is one of the factors that influence the determination of delivery time.

once the date is agreed, the parties are obliged to fulfill their obligations before the agreed time, or they might face claims.

the port of destination is usually proposed and determined by the seller.

the port of shipment should be close to where the goods are manufactured.

if transshipment is allowed, it should also be indicated who pays the cost of transshipment.

claims may be filed when ______ breaks the contract and causes losses to the other party in business

which of the following is not the reason for a claim?

which of the following is not the way to make a claim more effective?

which of the following statement is not to refer to the impact of the problem when making a claim?

in the opening part of a claim letter, you can begin a letter by ________ for the need to complain and describing the problem.

which of the following statement is true about writing claim letters?

passive voice should be used in a claim letter to _________.

which of the following is not the right guideline for handling claims?

when receiving a claim, the receiver should first ________.

in which case can’t a claim be refused by the seller?

claims are always filed by the buyer against the seller.

you need to state the problem and specific reasons for being dissatisfied and ask for explanation when making a claim.

passive voice is preferred when writing an adjustment letter.

you should never be angry or accuse the customer when handling a claim.

a claim can be refused when there is no reliable evidence provided.

_____________ is arranging for a product to occupy a clear, distinctive, and desirable place relative to competing products in the minds of target consumers.

this section gives a whole picture about ______________involving market segmentation, market targeting and market positioning. ( b)

____________is defined by many marketers as “putting the right product in the right place, at the right price and right time.”

distribution channel is a way of selling a company's product either directly or via _________.

michael dell was a strong believer in the power of advertising and frequently stressed its importance in the company’s __________.

marketing shows how to reach to the customers and build long lasting relationship while sales just means selling is the _______ result of marketing.

marketing is _______ sales.

segmentation means breaking the heterogeneous market into aller, __________ markets.

marketing planning involves designing activities relating to marketing __________ and the changing marketing environment.

marketing plan is a written document that acts as a(n) _________ of marketing objectives for the marketing manager.

marketing is equal to selling products.

product, price, place and production are called marketing mix.

promotion only means one marketing strategy in the supermarket and department store.

appropriate marketing activities could promote sales.

marketing and sales both employ the pull strategy to attract consumers.

print publications such as magazines, books, newspapers and ________ (such as annuals) offer a variety of advertising opportunities.

unlike television, _____presents the additional disadvantage of limiting advertisers to audio-only advertising.

the fastest growing media outlet for advertising is the ______.

______are often aller than outdoor billboards and are designed to attract the attention of foot traffic. for example, aller signage in airports, train terminals and large commercial office space fit this category.

because it is a mass medium capable of being seen by nearly anyone, _____lacks the ability to deliver an advertisement to highly targeted customers compared to other media outlets.

to evaluate media efficiency, planners shoud consider the following factors except _________.

advertising works best when it’s developed to meet one goal at a time.

handheld devices, such as cellphones, artphones, portable computers and other wireless devices, make up the growing mobile device market.

advertising cannot serve as a reminder to consumers.

advertisement cannot differentiate the product from its compes.

good advertisement can induce consumers to try the product.

训练期间实习行为描述不正确的是( ) 。

一台机床多人操作时,可以做到( ) 。

50个等分刻度的游标卡尺的精度是( )mm

游标卡尺(游标尺上有50个等分刻度)读数为( )mm。

游标卡尺可以当作其它工具使用。

“cnc”的含义是()

数控机床的核心部件是指( )。

g01指令是什么命令( )。

程序编制中首件试切的作用是( )。

数控车床的机床原点是操作者根据个人的习惯而设定。

电力系统对于故障的响应包括()

工业控制计算机与普通家用微机很类似,工业控制计算机与微机的主要区别在于()

以mcs-51为代表的单片机采用哈佛总线结构

当电力系统出现大量功率缺额时,()能够有效阻止系统频率的异常下降。

通过(),可以保证基本轮动作后频率确实没有回升到恢复频率之上时特殊论才动作。

当系统发生事故,系统电压急剧下降,自动低频减载装置的频率继电器可能会误动作,此时应该采取的措施是()

并列断路器合闸时,发电机冲击电流应尽可能小,其瞬时最大值一般不超过 ()倍 的额定电流。

电网的准同期并列主要特点有()

自同期并列是不给发电机加励磁,直接将发电机并入电网,由系统将发电机拖入同步。

满足理想条件的同步发电机并列操作称为“同期”,以近于理想条件进行的发电机并列操作称为“()”

滑差是指 与 之差。

自同期并列的条件是发电机( )

准同期并列的条件是( )

越前时间tyj为提前d=0°发合闸脉冲的时间,一般为( )

线性整步电压斜率与频率( )

线性整步电压中的d=0°的点( )真正的d=0°的点。

线性整步电压最低点对应的d角为 ( )。

相角差d由( )到( )变化所经历的时间,叫滑差周期。( )

同步发电机组并入电网后,应能迅速进入 状态,其暂态过程要 ,以减小对电力系统的扰动。( )

电力系统运行中的主要并列方式为( )。

同步发电机并列操作存在电压幅值差时冲击电流主要为 分量,存在合闸相角差时冲击电流主要为 分量。

不属于自动准同期并列装置检测和控制条件的是( )。

按提前量的不同,准同期并列装置可分为恒定越前相角和( )。

恒定越前时间并列装置规定的允许电压差为不超过额定电压的( )。

与正弦整步电压最小值所对应的相角差一定等于( )。

只反映了断路器两端的相角差特性,而与它们的电压幅值无关的整步电压是( )

自动准同期并列装置中调压部分的作用是( )。

准同期并列滑差角频率允许值规定为( )。

准同期并列与自同期并列相比较的优点是( )。

全波线性整步电压整形电路的目的是为了( )。

同步发电机并列时的允许冲击电流一般不应超过待并发电机额定电流的( )倍。

当滑差角频率恒定时,相角差d(t)( )。

恒定越前时间等于( )。

不属于准同期并列条件的是( )。

自同期并列的缺点是( )。

与半波线性整步电压相比,全波线性整步电压滤波器的时间常数( )。

全波线性整步电压相敏电路在正、负周期内获得(  )次相位比较机会。

自动准同期并列装置中不包含的控制单元是( )。

按自动化程度的不同,准同期并列有哪几种方式?( )

数字式并列装置的硬件配置包括( )。

整步电压按波形可分为( )。

准同期并列和自同期并列两种方法均可用于两系统之间的并列。

自同期并列是不给发电机加励磁,直接将发电机并入电网,由系统将发电机拖入同步。

滑差周期ts长表示频差大,ts短表示频差小。

准同期条件不满足时,并列瞬间会产生冲击电流和振荡现象。

利用线性整步电压可以直观地判断准同期的三个条件。

并列操作时,允许冲击电流瞬时最大值一般不超过额定电流的1~2倍。

电气设备的操作分正常操作和反事故操作两种类型。

同步发电机组并列时冲击电流瞬时最大值一般应不超过待并发电机额定电流的2~3倍。

在电力系统正常运行情况下,一般采用准同期并列方法将发电机组投入运行。

准同期并列装置主要包括频率差控制单元、电压差控制单元和合闸信号控制单元。

自动并列装置检测并列条件的电压常称为整步电压。

线性整步电压只反映机端电压和网侧电压间的相角差特性,而与它们的电压幅值无关。

恒定越前时间并列装置整定越前时间tyj主要决定于自动装置合闸信号输出回路的动作时间。

半波线性整步电压较全波线性整步电压多一倍的矩形脉冲。

自动并列装置频率差控制任务由频率差测量和调节量控制两部分组成。

同步发电机组并列时的相位差主要产生无功冲击电流。

当并网发电机与电网间的联系较弱时,有可能需要按稳定条件对合闸时的滑差角频率进行校验。

准同期并列装置主要包括频率差控制单元、电压差控制单元和合闸信号控制单元。

脉动电压可能的最大幅值为发电机电压幅值与系统电压幅值之和。

脉动电压可能的最小幅值为发电机电压幅值与系统电压幅值之差的绝对值。

恒定越前时间等于并列断路器的合闸时间。

最大允许滑差角频率决定于允许合闸相角。

在一个周期内,全波线性整步电压与半波线性整步电压矩形脉冲数目相同。

线性整步电压,频率差的检测与发电机电压幅值无关。

准同期并列与自同期并列相比较的优点是( )。

全波线性整部电压整形电路的目的是为了( )。

同步发电机并列时的允许冲击电流一般不应超过待并发电机额定电流的( )倍。

当滑差角频率恒定时,相角差( )。

恒定越前时间等于( )。

不属于准同期并列条件的是( )。

自同期并列的缺点是( )。

与半波线性整部电压相比,全波线性整部电压滤波器的时间常数( )。 

全波线性整部电压相敏电路在正、负周期内有(  )次相位比较机会。

自动准同期并列装置中不包含的控制单元是( )。 

自同期并列的条件是发电机( )

准同期并列的条件是( )

越前时间tyj为提前d=0°发合闸脉冲的时间,一般为( )

线性整步电压斜率与频率( )

线性整步电压中的d=0°的点( )真正的d=0°的点。

线性整步电压最低点对应的d角为 ( )。

相角差d由( )到( )变化所经历的时间,叫滑差周期。( )

同步发电机组并入电网后,应能迅速进入 状态,其暂态过程要 ,以减小对电力系统的扰动。( )

电力系统运行中的主要并列方式为( )。

同步发电机并列操作存在电压幅值差时冲击电流主要为 分量,存在合闸相角差时冲击电流主要为 分量。( )

不属于自动准同期并列装置检测和控制条件的是( )。

按提前量的不同,准同期并列装置可分为恒定越前相角和( )。

恒定越前时间并列装置规定的允许电压差为不超过额定电压的( )。

与正弦整步电压最小值所对应的相角差一定等于( )。

只反映了断路器两端的相角差特性,而与它们的电压幅值无关的整步电压是(  )。 

自动准同期并列装置中调压部分的作用是( )。

同步发电机并列方式包括两种,即( )。

按自动化程度的不同,准同期并列有哪几种方式?( )

数字式并列装置的硬件配置包括( )。

整步电压按波形可分为( )。

同步发电机组并列时的相位差主要产生无功冲击电流。( ) 

当并网发电机与电网间的联系较弱时,有可能需要按稳定条件对合闸时的滑差角频率进行校验。(  )

准同期并列装置主要包括频率差控制单元、电压差控制单元和合闸信号控制单元。(  )

脉动电压的最大幅值不可能为发电机电压幅值与系统电压幅值之和。( )

脉动电压可能的最小幅值为发电机电压幅值与系统电压幅值之差的绝对值。(  )

恒定越前时间等于并列断路器的合闸时间。( )

最大允许滑差角频率决定于允许合闸相角。(   )

在一个周期内,全波线性整步电压与半波线性整步电压矩形脉冲数目相同。(  )

线性整部电压,频率差的检测与发电机电压幅值无关。(  )

准同期并列和自同期并列两种方法均可用于两系统之间的并列。

自同期并列是不给发电机加励磁,直接将发电机并入电网,由系统将发电机拖入同步。

滑差周期ts长表示频差大,ts短表示频差小。

如果发电机并列前滑差较大,暂态过程可能形成增幅振荡,最后导致失步。

准同期条件不满足时,并列瞬间会产生冲击电流和振荡现象。

利用线性整步电压可以直观地判断准同期的三个条件。

正弦整步电压与线性整步电压相比,波形不同,特点一致。

并列操作时,允许冲击电流瞬时最大值一般不超过额定电流的1~2倍。

电气设备的操作分正常操作和反事故操作两种类型。

同步发电机组并列时冲击电流瞬时最大值一般应不超过待并发电机额定电流的2~3倍。

在电力系统正常运行情况下,一般采用准同期并列方法将发电机组投入运行。

准同期并列装置主要包括频率差控制单元、电压差控制单元和合闸信号控制单元。

自动并列装置检测并列条件的电压常称为整步电压。

正弦整步电压不仅是相角差的函数,而且还与电压差值有关。

线性整步电压只反映机端电压和网侧电压间的相角差特性,而与它们的电压幅值无关。

恒定越前时间并列装置整定越前时间tyj主要决定于自动装置合闸信号输出回路的动作时间。

半波线性整步电压较全波线性整步电压多一倍的矩形脉冲。

自动并列装置频率差控制任务由频率差测量和调节量控制两部分组成。

并列的允许电流值如何考虑?说明理由。

同步发电机励磁控制系统的作用不包括()

在下列励磁控制系统中没有励磁机的是()

由发电机、励磁功率单元和励磁调节器共同构成了稳定运行的()环反馈控制系统

评价励磁电压上升速度的指标有()

强励倍数是指强励时可能提供的()电压与额定工况下励磁电压之比

所谓灭磁,就是将发电机()的磁场尽快地减弱为最小程度。

发电机空载时端电压降低,强励装置( )动作。

机端直接并联运行的发电机,无差特性的机组( )。

同步发电机的励磁电流是( )。

下列四种类型的励磁调节器:①半导体型,②机电型,③电磁型,④微机型,按时间发展顺序排列应为( )。

同步发电机的励磁系统主要由以下两部分组成( )。

交流主励磁机的频率一般为( )。

励磁顶值电压是励磁功率单元在强励时可能提供的最高电压,该值与额定励磁电压之比称为强励倍数,其值一般为( )。

电力系统短路故障时,励磁调节装置使短路电流( )

电力系统短路故障时,励磁调节装置( )带时限继电保护装置的灵敏度。

下面( )不能作为灭磁方法。

快速励磁系统的的电压响应时间一般为( )或更短。

对于励磁系统的设计,首先要考虑的是( )。

交流励磁机的时间常数较大时,其响应速度( )。

发电机进相运行受静态稳定极限限制所对应的励磁辅助控制是( )。

若以p、q为横轴和纵轴,发电机静态稳定的极限一般在( )。

通常将励磁电压在最初0.8s内上升的平均速率定义为励磁电压响应比。

交流励磁系统整流电路中,为了确保逆变成功,根据经验最小逆变角一般为40°~50°。

整个励磁自动控制系统是由励磁调节器、励磁功率单元、发电机构成的一个反馈控制系统。

发电机发出的有功功率只受调速器控制,与励磁电流的大小无关。

同步发电机欠励磁运行时,由超前的功率因数变为滞后功率因数,发电机从系统吸收无功功率,这种运行方式称进相运行。

自动调节励磁,能稳定分配机组间的有功负荷。

平移同步发电机的外特性是为了平稳地投入或退出发电机,以免对系统造成有功冲击。

具有负调差特性的机组,绝对不能参与并联运行。

三相半控桥式整流电路中,只要改变控制角a的大小,就可以改变整流输出电压的大小。当a增大时,整流输出电压随之减小。

为使无功负荷按机组容量分配,并联运行的发电机外特性应重合,且具有正调差系数。

发电机组并联运行时,调差系数小的机组承担的无功负荷增量较大。

增加或减少励磁,可以实现对电压及无功功率的调节。

发电机解列时,会使电压升高。

晶闸管整流电路的换向压降相当于该直流电源的内阻压降。

某电厂有两台发电机在公共母线上并联运行,1号机的额定功率为25mw,2号机的额定功率为50mw。两台机组的额定功率因数都是0.85。2号机励磁调节器调差系数为0.05,1号机为无差调节特性。若系统无功负荷波动使电厂无功增量为它们总无功容量的10%,问各机组承担的无功负荷增量是多少?母线上电压波动是多少?若发电厂无功增量为它们总无功容量的60%,情况又如何?对各种情况进行讨论。

下列不属于励磁控制系统的辅助控制的是()

设某台同步发电机直接与无穷大系统并列运行,当调节该机组励磁电流时,可改变该发电机输出的 ( )

在同步发电机励磁控制系统中,励磁调节器正常情况下的自动控制与辅助控制的区别是,辅助控制不参与正常情况下的自动控制,仅在发生非正常运行工况时,励磁调节器具有某些特有的限制功能时起相应控制作用。

两台正调差特性的发电机直接并联运行,调差系数小的机组承担的无功电流的变化量()

无论电子型还是电磁型励磁调节器的前置放大单元,共同具有的特性是()

发电机的调节特性就是发电机转子电流与()电流之间的关系。

()表征了无功电流从零增加到额定值时发电机电压的相对变化,也表征了励磁控制系统维持发电机电压的能力。

当励磁控制系统存在不稳定运行区域时,通过增加励磁稳定器可以使励磁控制系统全区域稳定运行,励磁系统稳定器的主要作用包括()

在s平面实轴上的某一区域,若其右边开环实数极、零点个数之和为偶数,则该区域为根轨迹。

系统的根轨迹通常是连续的,并且对称于虚轴。

某系统开环极点个数为5,开环零点个数为2,有()条根轨迹分支沿着一组渐近线趋向于无穷远处。

发电机经输电线路并列运行,在扰动下会发生发电机转子间的相对摇摆,并在阻尼过多时引起低频振荡

低频振荡的解决办法是:在励磁系统引入适当的信号 ,以增强系统的阻尼

在研究电力系统低频振荡时,由于系统处于大扰动状况,因此可以将方程线性化。

声乐老师在教学过程中经常会提醒学生要“吸着唱”,就是一边吸气一边唱歌的意思。

喉咙打开过大或过小都会给歌唱带来不利。

合理充分地打开我们的喉咙,是掌握科学发声的必要前提,更是学好歌唱的必经之路。

对于歌唱者而言,唱准节奏是非常重要的基本功,也是音乐表现所需要的、必备的基本音乐素质。

在我国传统音乐中,称节拍为“板眼”,“板”相当于弱拍,“眼”相当于强拍。

在简谱中,歌曲节奏为2/4,表示以四分音符为一拍,每小节有两拍。

经验告诉我们,凡是唱歌跑调的人,无法通过科学练习解决音准问题。

歌唱需要通过科学的训练、大量的实践、不断地演练,才能真正掌握科学的歌唱发声方法,逐步提高歌唱的能力。

声乐训练的周期较长,不能幻想着练个三两天就能解决歌唱问题,要一步一步地踏实前行。

歌唱气息的运用能力强弱,直接影响着歌唱水平的高低。

我们的歌唱就建立在正确的呼吸动力之上,依靠气息推动我们进行歌唱。

吸气的时候,横隔膜向上运动,腹部微微向内收缩,气息被吸入肺部。

过于琐碎的换气,会破坏歌曲乐句的连贯和完整,让歌曲的内容变得支离破碎。

歌唱时的换气口,与我们在进行朗诵歌词时的换气口是完全不同的。

作曲家们在创作歌曲的时候,都会细致考虑旋律性和语言性的高度统一。

埃里克·莱斯(eric ries)结合“客户开发”原则和 原则,2011年提出了“精益创业”(leanstart-up)方(单选)

以下哪些是火箭发射式创业模式的特点(多选)?

精益创业概念的提出也受丰田精益制造生产系统的启发

创业是一种失败率很高的冒险活动

成功创业的公司,往往都是在创业过程中完全按照最初的方案执行的

长期以来,创业者们一直都在靠胆量、凭直觉和运气来寻找更好的方案

根据导学所讲,创业的本质是什么?(单选)

精益创业(lean startup)的概念是由_______ 于2012年在《精益创业》一书中提出

精益创业的核心思想是

精益创业方的价值是(多选)

精益创业方,只适合创业者学习

精益创业其实就是精益生产

《跨越鸿沟》一书中把用户分为五类,以下哪个不属于这五类分类?(多选)

精益创业的三大主要理论基础是(多选)

根据《跨越鸿沟》的建议,如何跨越高科技产品商业化的鸿沟?(多选)

新兴企业如何凭借颠覆性创新异军突起?(多选)

颠覆性创新策略选择(多选)

领先用户面临市场上将普及的新产品或服务需求,但是他们在市场上大部分人遇到这种需求几个月或几年之前就已遇到了

领先用户不能或不愿等到新产品或服务慢慢变到在市场上可以获得,所以他们经常提前开发新产品或服务

以下哪个不属于精益画布的内容?

顺丰嘿客o2o项目失败给我们的启示与教训是(多选)

以下哪些是精益创业的误区与局限(多选)

以下哪些是创业的显性成本(多选)?

以下哪些是创业的隐形成本(多选)?

精益创业仅适用于互联网创业

以下哪个不属于精益创业的逻辑框架的内容

以下哪些是传统的产品引入模型经过的阶段

瀑布型开发模式的特点是(多选)

敏捷开发模式sprint(冲刺)的主要阶段是(多选)

用户探索阶段要定义的基本假设是(多选)

根据精益创业框架,以下哪两个属于从0到1的探索商业模式阶段?(多选)

哪个不是设计最小化可行产品(mvp)的要点?

哪个不是验证mvp的常见方法

创业公司最大的浪费是什么?

以下哪个不属于“精益创业”的五大原则?

在用户验证阶段,如果用户有需求但效果不好,一般首先建议是(单选)

以下哪个不是精益创业中所指的显性成本?

亚马逊生鲜业务amazonfresh从webvan的失败经历中汲取的三大教训是(多选)

当前大变革、高不确定性时代的特点是(多选)

用户探索阶段的要点是(多选)

用户痛点一般从哪三个维度来判断?(多选)

用户探索阶段常用方法(多选)

为什么初创公司不适合只靠问卷调查来进行用户探索?(多选)

用户验证阶段的要点是(多选)

天使用户基本特点是(多选)

根据精益创业方,用户探索和用户验证发现有问题后的常见转型(轴转)方式是(多选)

验证mvp的几个技巧(多选)

验证最小化可行产品(mvp)的常见方法有(多选)

精益创业的本质是(多选)

最小可行产品(mvp)的特点是(多选)

mvp(最小可行化产品)之后的用户访谈主要问哪些内容(多选)?

商业模式转型的常见形式是(多选)

以下哪些是社会化新媒体?(多选)

颠覆性创新策略选择(多选)

以下哪些创业领域精益创业的可能性相对较小(多选)

精益画布的成本分析维度包括(多选)

商业计划书往往是纸上谈兵

商业计划书假定,在筹集资金和真正执行想法之前,创始人能提前预知未来业务中的绝大多数“未知领域”

商业计划书通常会预测公司在未来三至五年内的收入、利润和现金流

webvan生鲜公司破产的原因是在没有达到盈利平衡点之前,就盲目扩张,违反了精益创业原则

埃里克·莱斯(eric ries)在提出精益创业概念之前就意识到,传统的瀑布流产品开发模式将很快被新的迭代敏捷开发模式所替代

哈佛商学院什卡·高希(shikhar ghosh)的研究显示,25%的初创公司会失败

一家创业公司之所以能成功,并不一定是因为最初的方案制定的好,更重要的是在资源耗尽之前,找到了一个真正可行的方案

facebook案例中,最初第一个版本包含了男女互相投票,看对方是否好看、照片评选、个人凯发官网入口主页、分享传播等功能。

新创公司是大公司的缩小版

现有大公司是执行一个已经经过验证、成熟的商业模式

新创公司需要探索一种尚未经验证的商业模式

很多新创企业之所以失败,是因为他们混淆了探索与执行,过早地去执行一个没有经过验证的假设

精益创业方体现的是“创建—评估—学习”反馈循环

设计思考是一个以人为本、洞察人性、产生极致新产品/服务体验创意与原型的创新创业方

在做最小化可行产品时,专注某个单一功能会更加节约开发时间和精力,避免用户的注意力被分散,让他们关注到产品的主要功能

通过预售,你可以了解到人们对于产品的需求到底有多大,考虑是否还要继续项目

创业者可以发起产品众筹,然后根据人们的支持判断人们对于产品的态度

众筹可以帮助创业者接触到一群对于你的产品十分有兴趣的晚期用户

“精益创业”五大原则中,行动导向的意思是行动优先于认知

“精益创业”五大原则中,目标可移是指在实施的过程中不断修整创业路径

“精益创业”五大原则中,快速迭代是指用最低的成本,最快的速度迭代

精益创业中的最小可行产品mvp主要目的是解决产品设计或技术方面的问题

精益创业中的最小可行产品mvp主要目的是验证基本的商业假设

精益创业中的最小可行产品mvp验证面向的主要是后期大众用户

精益创新创业战略的核心是小步快跑,快速迭代

根据小米联合创始人kk的介绍,小米采用的是瀑布型产品开发模式

根据精益创业框架,用户探索和验证阶段(探索商业模式阶段)的现金流一般是正的

创业的初期一般建议先从一个客户的小痛点出发,逐渐扩充自己的功能

a/b 测试是指开发两版页面,然后将这两个页面以随机的方式同时推送给所有浏览用户,然后通过 一些分析工具,了解用户对于不同版本的反馈

paas(platform-as-a-service)是验证最小化可行产品(mvp)的常见方法之一

虚构的mvp是指在产品开发出来之前人工模拟真实的产品或服务,让消费者感觉他们在体验真实的产品

贵宾式 mvp是指向特定的用户提供大批量高度标准化的产品

微信之父张小龙认为,产品是规划出来的,而不是演化出来的

根据微信之父张小龙的观点,产品的1.0版本,尽可能把产品功能全部做完整,尽善尽美了再推向市场

创业最大的隐性成本是时间成本

精益创业的核心就是为了降低创业的显性成本

一般来说,实体性越强,精益创业的空间越小

硬件产品创业完全无法做精益创业探索

颠覆式创新的原则是不要过早以巨头的方式正面挑战巨头

参考精益创业方的误区,在激烈竞争的时候,创业者所有想法都需要去做mvp

根据微信之父张小龙的观点,现在互联网时代做产品最大的痛点是没有人告诉你需要什么

根据今夜酒店特价创始人任鑫的建议,互联网创业项目应该一开始就做app

根据课程所讲案例,美剧的拍摄,往往都会一次性拍好所有季内容,集中一段时间播放

美剧周拍季播的模式,把所有的决策权交给观众,让制作方的投资以及失败成本降到了最低

根据顺丰嘿客案例,o2o(线上线下互动)项目的落点应该是成本的降低,而不是效率驱动

根据顺丰嘿客案例的教训,o2o的出发点是把老年人变成互联网用户

精益画布中的独特卖点是指用一句简明扼要但引人注目的话来阐述产品为什么与众不同、值得购买

精益画布中的k8凯发的解决方案是指产品最重要解决的三个问题

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