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【单选题】
有一个电阻,两端加上50mV电压时,电流为10mA,当两端加上10V电压时,流过的电流为( )A。A.
10
B.
50
C.
2
D.
1
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举一反三
【单选题】I_____ violin lessons every two weeks, but I think I'll make it every week from next month. [ ]
A.
am having
B.
have had
C.
have
D.
have been having
【单选题】If I were in ______ position of the head, I would make every effort to bring ______ end to cheating in exams.
A.
/; the
B.
a; the
C.
a ; an
D.
the; an
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