CT成像过程中需要测量体素的（） A.质量 B.密度 C.线性衰减系_爱下问搜题

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问题单项选择题 A1/A2型题

CT成像过程中需要测量体素的（）

A.质量

B.密度

C.线性衰减系数

D.体积

E.每千克电子数

答案

参考答案：C

选择题

具有气孔构造的岩石是

A．变质岩

B．沉积岩

C．侵入岩

D．喷出岩

填空题

从方框中选择恰当的短语并用其正确形式填空。

big name, plenty of, not … any more, in the open air, such as

1. You have______chances to watch NBA matches in America.
2. The baby watched and listened, and she ______cry ______.
3. Most children prefer to play______ rather than stay at home.
4. Many teenagers are crazy about world-famous brands, ______Nike and Puma.
5. There you can see many ______and top stars in television and films.