题目内容
(请给出正确答案)
[主观题]
I was ______ by an unexpected caller that afternoon, so I failed to turn up at the meeting
on time.
A.detailed
B.detained
C.detached
D.decayed
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A.detailed
B.detained
C.detached
D.decayed
指出图1-43中哪些是电源,哪些是电阻。
(a)I=1A,U=-1V;(b)I=1A,U=-1V;(c)I=1A,U=1V;(d)I=1A,U=1V。