铺设一段60kg/m钢轨的普通线路，采用25m标准轨、钢筋混凝士枕，

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问题单项选择题

铺设一段60kg/m钢轨的普通线路，采用25m标准轨、钢筋混凝士枕，每千米铺轨枕1600根，接头轨枕间距为520mm，中部轨枕间距为（）。

A、630mm

B、630.7mm

C、635mm

D、635.5mm

答案

参考答案：A

阅读理解

阅读理解。

Kate is an English girl. She has two brothers,but she has no sisters. Her brothers both like playing the

guitar. Kate's father likes playing the trumpet. He is a teacher in a trumpet club. Andher mother likes

playing the violin. She can play itvery well. Kate is thirteen. She is going to China withher parents next

week because her parents findjobs in China.

1. How many people are there in Kate's family?

A. Four.

B. Five.

C. Six.

D. Seven.

2. Kate's father likes_________.

3. In a word, Kate's parents and brother like _________.

A. shopping

B. sports

C. China

D. music

4. Who is going to China?

A. Kate.

B. Mum.

C. Dad.

D. A,B and C.

5. What does Kate's mother like doing?

单项选择题

未来现金流入量现值等于未来现金流出量现值的贴现率，称为（）。

A.内含报酬率

B.现值指数

C.会计收益率

D.投资回收期