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【单选题】
What kind of answers did he get from the college graduate who wanted a job?A.
Almost all of them were yes.
B.
Almost all of them were no.
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举一反三
【单选题】关于直流电动机的感应电动势, ,下列说法正确的是( )
A.
仅仅在静态下，感应电动势与转速成正比关系
B.
仅仅在动态下，感应电动势与转速成正比关系
C.
在静态和动态下，感应电动势与转速均成正比关系
D.
在静态和动态下，因为其他因素的影响，感应电动势与转速均不成正比关系
【单选题】Rosita is said _____ in Japan, but I don’t know what city she studied in．
A.
to have studied
B.
to study
C.
to be studying
D.
to have been studying
【单选题】Tea ceremony, though it is now most popular in Japan, is said_______ in ancient China.
A.
to have been originated
B.
to be originating
C.
to have been originating
D.
to have originated
【单选题】The climate here is often said to be similar to ______.
A.
a. Japan
B.
b. one of Japan
C.
c. that of Japan
D.
d. in Japan
【单选题】关于电压，下列说法不正确的是
A.
电源是提供电压的装置
B.
电压是形成电流的原因
C.
电源使正电荷聚集在电源负极，使负电荷聚集在正极，从而产生电压
D.
电路中有电流时，电路两端就一定有电压
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