下列关于CT值的概念，正确的是（）。 A.根据CT值可以对病变做出

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问题单项选择题

下列关于CT值的概念，正确的是（）。

A.根据CT值可以对病变做出定性诊断

B.CT值反映了物质内的成分

C.CT值是物质密度的绝对值

D.不同机器产生的CT值不同

E.CT值反映了物质的密度

答案

参考答案：E

阅读理解

Read and answer. 看看今天的 Peter是否快乐!根据短文回答问题。

It is Sunday today. The weather is cloudy. Peter gets up early in the morning. He eats breakfast at seven

o'clock. After breakfast, he begins to do his homework. At ten o'clock, he finishes his homework and goes to

see his friend, Jack. They are going to fly kites in the park. How happy they are! Suddenly it is raining. They

have to stay at home and watch the rain. Poor Peter !

1. What day is it?

2. How's the weather at first?

3. What does Peter do after breakfast?

4. Where are they going?

5. Do they go to the park?

单项选择题

DR50-16CT2型全自动电开水炉若接触器1C不吸合，则产生的故障现象为（）

A.产温水

B.不烧水

C.不进水

D.煮水时断时续