(理)设虚数z满足z+4z=a(其中a为实数).(1)求|z|;(2)若|z-2

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问题:

(理)设虚数z满足z+
4
z
=a
(其中a为实数).
(1)求|z|;
(2)若|z-2|=2,求a的值.
考点:复数的四则运算
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正确的连续请求暂停与换人是()

A、甲队暂停,乙队暂停,甲队换人

B、甲队换人,乙队换人,甲队换人

C、甲队换人,乙队暂停,甲队换人

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“American Dreams in China,” a comedy based ___小题1:__the story of real-life company New Oriental Education Group, is now the weekly champion of China’s box office(票房)__小题2:(beat) Hollywood blockbusters(大片) “Iron Man 3” and “The Croods(疯狂原始人).”

The movie,小题3: cost $9 million to produce, has taken in(收入) over $34 million in ticket sales小题4:it was released on May 17,according to media research.

The main character in this movie is believed to resemble Yu Minhong,小题5: chief executive and co-founder of New Oriental. 小题6: Mr. Yu said on his Sina Weibo that he has no小题7:(invest) in the movie and he was against the idea in the first place.

Heated discussion on the definition of real successes小题8:(arouse) after more and more audience came into the cinema for this movie. 小题9:some among the Chinese audience are cheering for the entrepreneurial spirit the movie conveys,others say skeptically that 小题10:equates(等同)success with wealth and fame.

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患者,女,36岁。左眼流泪3年,泪囊区稍隆起,压迫泪囊区有脓液从下泪点溢出。

术前较重要的辅助检查是()

A.眼眶CT

B.眼眶B超

C.尿常规

D.X线泪道造影

E.泪膜破裂时间

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铁口被焦炭卡住时,必须将铁口()方能堵铁口。

A.捅开

B.烤干

C.烧开

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超车的规范操作包括()。

A.观察左侧.后方交通情况

B.超车前开启左转向灯

C.从左侧超越前车

D.超车后迅速向右转向

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