搜题请搜索小程序“爱下问搜题”
问题 单项选择题

在HRCT扫描的必备条件中，哪项与降低噪声有关（）

A.CT机固有空间分辨率0.5mm

B.扫描层厚为1～1.5mm的薄层扫描

C.图像重建使用高分辨率算法

D.应用512×512以上矩阵采集

E.使用高kV和高mAs扫描

答案

参考答案：E

听力题

阅读短文，根据短文内容及首字母提示，在空白处填入一个适当的单词。

Think about two people you know. How would you describe their personalities? Are they the 小题1:s ______ ?Of course not! Everyone is different .Even twins have 小题2:d _______ personalities.

Some people are very outgoing and 小题3:f_______ .They like to be 小题4:w_____ other people all the time. And some people are quiet, maybe even shy. They like to be alone or play with a 小题5:f ______  friends.

Some people worry a lot. They may小题6: w _____about many things. 小题7:H_____,some people don't worry about anything! They 小题8:n_______ mind what is going on next. These people are very relaxed.

Some people are小题9:h _______.They always do their best. They aren't lazy. They always get more chances to have success.

And don't 小题10:f _______ this: Everyone is different.

That means you are special.
查看答案
问答题 简答题

康熙皇帝期间将保和殿称为什么？
查看答案