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【判断题】
热电偶中的热电动势由 接触电动势和温差电动势 组成。A.
正确
B.
错误
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举一反三
【单选题】The part of the statue that we can see on the outside was made by ______.
A.
an unknown designer
B.
Bartholdi
C.
Eiffel
D.
both Bartholdi and Eiffel
【单选题】一个电容器的规格是10μF、50V”则( )。
A.
这个电容器加上50V 电压时，电容量才是10µF
B.
这个电容器的最大电容量为10µF ，带电荷量较少时，电容量小于10µF
C.
这个电容器的电容量等于10µF
D.
这个电容器上加的电压不能低于50V
【单选题】Infrared scanning technology may be brought back into operation because of_____.
A.
the desire of farmers to improve the quality of their produce
B.
growing concern about the excessive use of pesticides on crops
C.
the forceful promotion by the Department of Agriculture
D.
full support from agricultural experts
【单选题】--- __________ does Jay Zhou do? Is he a doctor?
A.
- No, he __________. He is a singer from Taiwan.
B.
What, is
C.
What, isn’t
D.
How, is
E.
How, isn’t
【单选题】How does Jay do on the fashion quiz?
A.
He gets one answer correct.
B.
He gets two answers incorrect.
C.
He gets two answers correct.
D.
He gets three answers incorrect.
【单选题】--- __________ does Jay Zhou do? Is he a doctor? --- No, he __________. He is a singer from Taiwan. A. What, is B. How, isn’t C. How, is D. What, isn’t
A.
What, is
B.
How, isn’t
C.
How, is
D.
What, isn’t
【单选题】My mother doesn’t know __________ this morning.
A.
what to do
B.
what does do
C.
how to do
D.
why does do
【单选题】一 个 电 容 器 的 规 格 是 “ 10μF 、 50V ” 则( )
A.
这个电容器加上 50V 电压时，电容量才是 10µF
B.
这个电容器的最大电容量为 10µF ，带电荷量较少时，电容量小于 10µF
C.
这个电容器上加的电压不能低于 50V
D.
这个电容器的电容量总等于 10µF
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