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问题
选择题
复数(1+i)
3
的虚部为( )
A.-2
B.2
C.2i
D.-2i
答案
(1+i)
3
=(1+i)
2
(1+i)=2i(1+i)=-2+2i,
故选B.
选择题
Team leaders must ensure that all members ________ their natural desire to avoid the embarrassment associated with making mistakes.
A.get over
B.look over
C.take over
D.come over
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判断题
SCL-90辛的因子Ⅶ表示抑郁。 ( )
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