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问题 单项选择题

成人脑转移做Gd-DTPA增强扫描时，对比剂用量最好是（）

A.30ml

B.20ml

C.15ml

D.10ml

E.8ml

答案

参考答案：A

解析：成人脑转移做Gd-DTPA增强扫描时，对比荆用量最好是30ml。

填空题

根据首字母提示及句意填入适当的单词。

1. I can f_____ up the bike for you.

2. It's Friday today. Don't p_____ off it any more.

3. He is b_____, let's help him cross the road.

4. My computer is broken. He is r_____ it for me.

5. His father s_____ the window when it began to rain.

6. There is no water. Can you go and f_____ some?

7. Let's f_____ the basket with apples?

8. I like surfing the Internet, all the w_____ are interesting.

9. Lucy and Lily are twins, so they are s_____ in many ways.

10. Can you i_____ how fast he runs !

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单项选择题

在中国，802.11b2.4GHz的频段存在多少个非重叠信道（）。

A.6

B.3

C.12

D.8
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