问题 单项选择题

根据《水利水电工程钻孔压水试验规程》(SL31—2003)规定,试验流量观测一般每隔2min进行一次,当流量无持续增大趋势,且()时,观测工作即可结束。

A.2次流量观测读数中最大值与最小值之差小于最终值的10%

B.5次流量观测读数中最大值与最小值之差小于最终值的10%,或最大值与最小值之差小于11/min

C.5次流量观测读数中最大值与最小值之差小于最终值的5%,或最大值与最小值之差小于11/min

D.5次流量观测读数中最大值与最小值之差小于101/min

答案

参考答案:B

解析:根据《水利水电工程钻孔压水试验规程》(SL31—2003)规定,试验流量观测一般每隔2min进行一次,当流量无持续增大趋势,且5次流量观测读数中最大值与最小值之差小于最终值的10%,或最大值与最小值之差小于11/min时,观测工作即可结束。取最终值作为计算值。

完形填空

Round The World

Mr. and Mrs. Spencer both had very busy jobs and didn' t have much time to spend with their young children. They wanted to change this, and because their hobby was boating, they, decided to sail round the world together.

It took six years to prepare everything for the trip. First, they bought a new boat. Then, both the husband and wife had to take advanced (先进的) sailing lessons and learn all about the sea and the weather. Mr. Spencer also did several courses(课程) in repairing engines and Mrs. Spencer spent an hour in a restaurant learning to cut up fish.

In October they had one year off from their jobs and sailed away from England with their two children. The next year, in August, their long journey ended in Australia.

The boat was not big, but they took a teacher for the children with them. None of them found the trip boring because there were three computers, many CDs, a TV and a DVD player on the boat.

The family loved being at the sea and seeing the stars in the sky. But, most of all, Mr. and Mrs. Spencer enjoyed playing with their children while they were still young.

Answer the following questions with  No More Than 4 Words

小题1:What was Mr. and Mrs. Spencer’s hobby?

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小题2:How long did it take them to prepare for the trip?

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小题3:Where did they finish their journey?

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小题4:How many people were there traveling together?

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小题5:What was the best part of the trip Mr. and Mrs. Spencer enjoyed?

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选择题