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【单选题】
P型半导体中往往存在( )陷阱A.
空穴
B.
多子
C.
声子
D.
电子
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反馈参考答案：
举一反三
【单选题】The maximum stress in the beam's cross section is ( ).【图片】
A.
40.4 psi
B.
64.6 psi
C.
48.0 psi
D.
107.9 psi
【单选题】After living in London for thirty years, he returned to the small town _____ he once lived with his parents. [ ]
A.
which
B.
where
C.
while
D.
when
【简答题】She looked at her husband in ____. 她绝望地看着自己的丈夫。
【简答题】我不会因为失败而绝望地放弃自己的理想。(in despair)
【单选题】He has lived in London and New York, but he doesn't like ______ city.
A.
neither
B.
either
C.
both
D.
all
【简答题】绝望地 in ____
【简答题】I-shaped ; T-beam; n-region ; P-N-junction ; A.C.:ante cibos;
【简答题】elif语句必须和【】语句一起使用，否则会出错。
【单选题】On the cross-section that is exerted a concentrated couple m for the beam,.
A.
there is a sudden jump in value in Q diagram, but no change in M diagram
B.
there is a sharp angles in Q diagram, and a sudden jump in value in M diagram
C.
There is no change in Q diagram, but a sudden jump in value in M diagram
D.
There is a sharp angle in Q diagram, and no sudden jump in value in M diagram
【简答题】elif语句必须和【】一起使用,否则会出错。
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