天然河流一般是弯曲的,在河流上取两横断面,它们沿河流中泓线的长度与该两横断面中泓点之

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问题:

天然河流一般是弯曲的,在河流上取两横断面,它们沿河流中泓线的长度与该两横断面中泓点之间的直线长度的比值为该河段的()。

A、折线度

B、曲率

C、弯曲率

D、等深线

考点:水文勘测工考试水文勘测基础知识水文勘测基础知识题库
题型:单项选择题

阅读理解。

     Do you like children? Do you have free time in the afternoon? We need a babysitter for our son. He is 6 years old . Hours are from Monday to Friday, 3:00 p.m. to 6:oo p.m. Sometimes you will work all day at the weekend .Pay(报酬)is£4 every hour.

     For the job, you need to:

     ☆watch our son       ☆Read to him      ☆Play with him

     You will work in our house. We live in London, near City Subway Station.

     Please call 2956- 4938. Ask for Ms. White

1.The babysitter will work ______ hours from Monday to Friday altogether(总共).

A. 6                

B.10              

C.15              

D.20

2.The babysitter will usually(通常地)work ______.

A. in the morning      

B. in the afternoon  

C. in the evening    

D. at night

3.The babysitter will get ______ for working on Monday only.

A. £4              

B. £8            

C. £12          

D. £16

4.What is not the babysitter’s job?

A. Cleaning the child’s house          

B. Playing games with the child

C. Reading books to the child          

D. Watch the child

5. Which of the following is true(正确的)?

A.The pay every hour is more at the weekend

B. If you want to get the job, you must call Ms. White

C. The babysitter must work 6 hours a week      

D.The baby is 9 years old

题型:单项选择题

My friend, who _____ on the International Olympic committee all his life, is retiring next month. [ ]

A. served

B. is serving

C. had served

D. has served

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在我国,邮递货物保险条款包括()。

A.邮包险

B.邮包水渍险

C.邮包一切险

D.邮包战争险

E.邮包罢工险

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被动、文怖、嫉妒、自我辩解等属于()。

A.准备心理和自评心理

B.受评过程心理

C.结果反馈心理

D.评价过程心理

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采用高压侧充注氟利昂时,应()

A、严格控制制冷剂供液量

B、严格控制制冷剂供气量

C、在最短时间里充注液体制冷剂

D、先注入一定的制冷剂气体后再注入制冷剂液体

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