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【单选题】
由NPN管构成的基本共射放大电路,输入是正弦信号,若从示波器显示的输出波形发现顶部(正半)削波失真,这是因为静态工作点IC( ),产生了( )失真。
A.
过大,截止
B.
过大,饱和
C.
过小,饱和
D.
过小,截止
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【单选题】reflect
A.
代表
B.
装饰
C.
反映
D.
上色
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【单选题】reflect
A.
to tell someone what to do
B.
to think about something
C.
to damage something very badly
D.
to send back an image
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【单选题】It is what you do ________ what you say that matters.
A.
in particular
B.
rather than
C.
due to
D.
in spite of
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【单选题】reflect
A.
v. 反映
B.
v. 折射
C.
v. 参考,涉及
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【单选题】reflect
A.
n.影响
B.
n.涉及
C.
vt.投诉
D.
vt.反射;思考
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【单选题】It is what you do _________what you say that matters. [ ]
A.
in place of
B.
rather than
C.
or rather
D.
in spite of
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【单选题】reflect
A.
增强
B.
反应
C.
限制
D.
加宽
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【简答题】reflect
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【单选题】It is not what you say but what you do that ______ people most.
A.
impress
B.
impresses
C.
impressed
D.
impressing
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【单选题】reflect
A.
反映,表现
B.
改良,改造
C.
抢劫,抢夺
D.
回答,回复
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【简答题】reflect
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【单选题】It is not what you say but what you do that ______ people most.
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impress
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D.
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【单选题】reflect
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B.
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C.
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D.
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