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【判断题】
NPN型三极管的发射极和集电极都是从N型半导体区域引出,故两电极可以互换使用A.
正确
B.
错误
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【简答题】According to Gerald Corbett, British railway is structured [A] for the benefit of commuters. [B] to the advantage of the government. [C] for the effect of better coordination. [ D] as a replacement of...
【单选题】According to Gerald Corbett, British railway is structured
A.
for the benefit of commuters.
B.
to the advantage of the government.
C.
for the effect of better coordination.
D.
as a replacement of the private system.
【单选题】Gerald Holton is a ______.
A.
Cambridge University philosopher
B.
Harvard University philosopher
C.
Stanford University philosopher
D.
philosopher of the University of Virginia
【简答题】生态因子相互联系表现在哪些方面?
【单选题】There was a brief silence, then Gerald ________________.
A.
spoke up
B.
spoke for
C.
spoke to
D.
spoke of
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