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【单选题】
晶闸管的三个电极分别称为()A.
、基极、源极
B.
栅极、控制极、阳极
C.
阴极、栅极、源极
D.
控制极、阳极、阴极
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举一反三
【单选题】What does the statement " sales is the principal budget factor" mean?
A.
The level of sales will determine the level of cash at the end of the period.
B.
The level of sales will determine the level of profit at the end of the period.
C.
The company's activities are limited by the level of sales it can achieve.
D.
Sales is the largest item in the budget.
【单选题】小组正在开发一个电费计费系统,系统中包含上百万电费数据,调试时,发现执行查询时,每次返回所有数据,非常费时。最好的处理方法是( )。
A.
删除数据，只保留几行数据
B.
查询时，使用TOP语句
C.
查询时，使用ORDER BY语句
D.
查询时，使用GROUP BY语句
【简答题】已知|x|=5，y=3，则x-y=______．
【单选题】Observations of the yield curve suggest that when interest rates are high and investors expect interest rates to fall, the yield curve will have a(n)
A.
upward slope.
B.
downward slope.
C.
horizontal slope.
D.
vertical slope.
【单选题】The statement "it is all too monkey"(Last line, Paragraph 1) implies that______
A.
monkeys are also outraged by slack rivals.
B.
resenting unfairness is also monkeys' nature.
C.
monkeys, like humans, tend to be jealous of each other.
D.
no animals other than monkeys can develop such emotions.
【简答题】When interest rates fall, the price of a callable bond will: A.rise more than an option-free bond. B.rise less than an option-free bond. C.fall less than an option-free bond.
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