在MRI图像中，如出现一低信号盲区或图像出现失真变形伪影，此为

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问题单项选择题

在MRI图像中，如出现一低信号盲区或图像出现失真变形伪影，此为以下哪项（）

A.生理性伪影

B.化学位移伪影

C.金属异物伪影

D.自主性运动伪影

E.部分容积效应

答案

参考答案：C

完形填空

1. Another time five ________ ago, I happened to be ________ at dusk when the window was open.

2. I looked at the man and the woman ________. They did not pay any ________. In the end, I could not bear it.

3. It was Sunday. I ________ get up early on Sundays. I sometimes stay in bed ________ lunchtime.

4. Everyday I ________ about postcards. My holidays ________ quickly, but I did not send cards to my friends.

5. He is working ________ a big firm and he has already visited a great ________ of different places in Australia.

选择题

下列对我国权利和义务关系的错误认识是 [ ]

A．没有无义务的权利，也没有无权利的义务

B．公民在享受权利的同时，也就履行了义务

C．权利和义务相互促进，相辅相成

D．公民在享受权利的同时必须履行义务