下面是关于复数z=21+i的三个命题：p1:z=2p2:z在复平面内对应的点在第四象限p3:z是纯虚数其中的真命题为( )

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下面是关于复数z=

2

1

+

i

的三个命题：
p1:z=2 p2:z在复平面内对应的点在第四象限 p3:z是纯虚数
其中的真命题为( )

A： $p_{1}, p_{2}, p_{3}$

B： $p_{2}, p_{3}$

C： $p_{2}$

D： $p_{3}$

上一题下一题 0.0难度选择题更新时间:2019-07-24 02:58:10

答案(点此获取答案解析）

C

同类题5

选择下列词汇完成下面的对话，并在答题卡上将相应的字母编号涂黑。（共5小题，每小题1分）

A. named B. relax C. enjoyable D. worst E. start F. best

Lisa: Lily, it's Saturday today. Why not go and ____ ourselves this evening?
Lily: Good idea! What would you like to do? See a movie or watch a play?
Lisa: A movie. It's said a new movie ____ The Grey is on these days. Have you seen it?
Lily: No. But I heard it was the____ movie of the year.
Lisa: Really? Then how about the film Shadows of Love? It's a love story. It should be ____ .
Lily: OK. What time does it ____ , do you know?
Lisa: Wait a minute. I'll check it... Yes. It says 7:30 this evening.
Lily: Good. See you then.

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答案(点此获取答案解析）

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