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【单选题】
放大电路设置合适静态工作点的目的是A.
提高电压放大倍数
B.
提高输人电阻
C.
减小输出电阻
D.
避免信号出现失真
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反馈参考答案：
举一反三
【单选题】Unlike other annelids, echiurans ( ).
A.
have an open circulatory system
B.
do not possess setae
C.
undergo radial cleavage
D.
are not segmented
E.
have enterocoelous coelom formation
【单选题】Coins, unlike other ancient artifacts, are usually found by accident______ by design.
A.
not
B.
rather than
C.
still less
D.
far less
【简答题】Unlike oxygen, the element nitrogen is not active.
【单选题】Unlike commercial banks, other depository financial intermediaries do not have to be much concerned with excess withdrawals of their deposits since they do not have to pay on demand by a depositor.
A.
True
B.
False
【单选题】In the writer's opinion, unlike what other people thought, ______ is a way to avoid facing responsibilities.
A.
staying in his job
B.
being a 'career student'
C.
quitting jobs
D.
going back to college
【单选题】Unlike other girls in school, Jenny played football very well.
A.
Right
B.
Wrong
C.
Not mentioned
【单选题】The constitution, unlike other forms of laws, is fundamental ______ our social system working properly. [ ]
A.
for keeping
B.
to keeping
C.
to keep
D.
with keeping
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