问题 判断题

混凝土的抗压强度以三个试件的平均值为测量值,如果任一个测值与中值差超出中值15%时,则该组试验无效。( )

答案

参考答案:

解析: 如任一个测值与中值差超出中值15%时,取中值作为测定结果。如最大值和最小值与中值的差均超出中值15%时,则该组试验无效。

完形填空

Dear Tony,

Time flies. It’s   1  now. We have warm days and bright sunshine again. Do you go out for your weekends?

Guess   2  I am now? I am not in Nanjing. I am in a town outside the city. This place is only 30   3  from my home by bus. It’s not a big town. Only fifty   4  people live here. So it’s less crowded(拥挤的) than Nanjing. There is   5  pollution here. And it’s usually   6  at night because there aren’t many cars. I had a good sleep last night! I didn’t   7  until 8.00 this morning!

It’s a beautiful town with lots of lakes and hills   8 . I want to   9  on the river after lunch. And I plan to go to climb the hills.

Come with me to this town next time. I am sure you don’t want to   10  when you come to the beautiful place.

1. A. winter   B. spring       C. summer        D. autumn

2. A. what      B. who        C. when          D. where

3. A. hours’     B. minutes’     C. hours         D. minutes

4. A. hundred   B. thousands    C. million        D. hundreds of

5. A. much     B. lots of       C. many          D. little

6. A. noisy     B. warm       C. quiet           D. interesting

7. A. wake up   B. sleep       C. have breakfast   D. go to school

8. A. inside     B. around      C. in the middle   D. go walking

9. A. stand     B. go walking   C. go boating     D. go shopping

10. A. leave    B. come       C. have fun       D. see me

单项选择题 共用题干题