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搜题
【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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举一反三
【单选题】reflect
A.
代表
B.
装饰
C.
反映
D.
上色
【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
【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
【单选题】reflect
A.
v. 反映
B.
v. 折射
C.
v. 参考,涉及
【单选题】reflect
A.
n.影响
B.
n.涉及
C.
vt.投诉
D.
vt.反射;思考
【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
【单选题】reflect
A.
增强
B.
反应
C.
限制
D.
加宽
【简答题】reflect
【单选题】It is not what you say but what you do that ______ people most.
A.
impress
B.
impresses
C.
impressed
D.
impressing
【单选题】reflect
A.
反映,表现
B.
改良,改造
C.
抢劫,抢夺
D.
回答,回复