quasilinear preferences are homothetic when the optimal amount of one of the goods is not affordable.
横向沟通与纵向沟通的实质性差别是：横向沟通中不存在上下级关系，沟通双方均为同一层面的同事。
who is titled as china's king of medicine?
菌种的分离、培养、接种、染色等研究微生物的技术发明者是（ ）
in a perfectly competitive industry, the demand curve for the total output of the industry may be downward sloping.
which of the following is not mentioned as a reason why calligraphy is still popular today?
一直沿用至今的巴氏消毒法的发明者是（ ）
a good (or service) whose consumption declines as income rises and increases as income decreases increase in income=decrease in consumption decrease in income=increase in consumption
阴虚血热型月经先期的治法是
the does the line"war is not the answer"in the song "what's going on"actually mean.
d/a转换器的功能是把数字信号转换成模拟信号
保险人对由于下列原因造成保险标的的损失不负责赔偿，其中不属于企业财产保险基本险的责任免除的是()。
孔子十分重视教育，认为“立国”的三大要素是()
用555定时器组成施密特触发器，电源电压10v，控制电压输入端悬空，则回差电压为 。
标准cmos电路74hc系列的电源电压值是：
汽车数是离散量。
用555定时器外加电阻、电容组成的单稳态触发器其脉冲宽度tw= 。
两大军事集团的形成离不开哪两国矛盾的加剧？
this song is about a man who feels guilty in the relationship with two women at the same time.