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【单选题】
单相半波可控整流电路中晶闸承受的最高电压是( )。A.
(A)1.414U2
B.
(B)0.707 U2
C.
(C)U2
D.
(D)2 U2
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【单选题】—Must I go through the radiation (辐射) check when I come back from Japan at the airport these days? —Yes, you ______.
A.
can
B.
may
C.
might
D.
must
【简答题】I want to see everything _____ order when I come back.A. in
【简答题】I suppose that when I come back in ten years’ time all these old houses ________ down. A) will have been pulled B) will have pulled C) will be pulling D) will be pulled
【单选题】I suppose when I come back in ten years' time, all these old houses______down.
A.
will have been pulled
B.
will have pulled
C.
will be pulling
D.
will be pulled
【单选题】下面for循环语句( )。
A.
t i,k;
B.
r (i=0, k=-1; k=1; i++, k++)
C.
intf(“***”);
D.
判断循环结束的条件非法
E.
无限循环
F.
只循环一次
G.
一次也不循环
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