哪项不是CR摄像的优点（） A.实现常规X线摄影信息数字化 B.提_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

哪项不是CR摄像的优点（）

A.实现常规X线摄影信息数字化

B.提高图像密度分辨力

C.辐射剂量降低

D.多信息显示

E.时间分辨力好

答案

参考答案：E

改错题

短文改错。
     此题要求改正所给短文中的错误没。对标有题号的每一行做出判断；
     如有错误(每行只有一个错误) ，则按下列情况改正：
     此行多一个词；把多余的词用斜线(\) 划掉，在该行右边横线上写出该词，并也用斜线划掉。
     此行缺一个词：在却此处加一个漏字符号(∧) ，在该行右边横线上写出该加的词。
     此行错一个词：在错的词下画一横线，在该行右边横线上写出改正后的词。

In Grand Eight I took physics. In one test I get
only 36 percent of the answer correct. I failed the
next one, either. I started to think that maybe I was
not good at it. However, I was not lucky enough to
have a teacher which didn't take my bad grades as a
judgement of my abilities, but simply like an indication
how I should study harder. He pulled me aside and told
me that he knew I could do better. He permitted to retake
the test, and I was pulled my grade to an A. This is what
I discovered: just because a subject is difficulty to learn.
It doesn't mean you are not good at it.

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填空题

用户组建网络的目的是为了开发基于( )的信息系统。