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【判断题】
与交流电流不同，直流电流没有确定的摆脱电流。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】we could only see a _____ outline of a ship in the distance.
A.
dark
B.
dim
C.
faint
D.
black
【简答题】We can not afford time to change the packing because the ship will sail after two days.
【简答题】以下( )组设置可以让某NPN型三极管工作在放大状态。
【简答题】Through the fog we saw the ______ outline of a ship. A) vacant B) clear C) ambiguous D) vague
【单选题】______ we admire Shakespeare's comedies, we can not agree that they are superior to his tragedies.
A.
Much as
B.
As much
C.
Much though
D.
Though much
【单选题】以下( )组设置可以让某NPN型三极管工作在放大状态。
A.
基极0.7V,发射极0V,集电极5V
B.
基极0V,发射极0.7V，集电极5V
C.
基极0.7V,发射极0V，集电极0.3V
D.
基极0V,发射极0.7V，集电极0.3V
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