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【简答题】
Ron does nothing but _______(critic) and complain all the time.
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举一反三
【简答题】左心室内压上升速度最快是在
【单选题】Although he _______ the danger to his own health, he found it difficult to quit smoking.
A.
was very aware of
B.
well awared of
C.
was well aware of
D.
very awared of
【简答题】共发射极放大器中集电极电阻 R C 起的作用是
【多选题】共发射极放大器中集电极电阻 R C 起的作用是()
A.
共发射极放大器中集电极电阻 R C 起的作用是将集电极电流的变化转化为电压的变化
B.
让输出电压 u 0 因 R
C.
上电压的变化而改变,从而使放大电路实现电压放大作用。 C、 调节偏置电流Ib的大小
D.
减少电流Ic
【单选题】Most smokers are perfectly aware _____ the danger of smoking. [ ]
A.
at
B.
of
C.
in
D.
with
【单选题】The student became ______ the danger of smoking and decided to give it up.
A.
aware
B.
aware that
C.
aware of
D.
aware with
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