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问题 单项选择题

某中砂换填垫层的性质参数如下：天然孔隙比e0＝0.7，最大干密度ρdmax＝1.8g/ cm3，现场检测的控制干密度ρd＝1.7g/cm3，该换填垫层的压实系数λc为( )。

A．0.94

B．0.89

C．0.85

D．0.80

答案

参考答案：A

解析：
据《建筑地基处理技术规范》(JGJ 79—2002)4.2.6条计算
λc＝ρd/ρdmax＝1.7/1.8=0.94

改错题
短文改错（共15小题；每小题1.5分，满分15分）
此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾(√)；如有错误(每行只有一个错误)，则按下列情况改正：此行多一个词：把多余的词用斜线(＼)划掉，在该行右边横线上写出该词，并也用斜线划掉。此行缺一个词：在缺词处加一个漏字符号(Λ)，在该行右边横线上写出该加的词。此行错一个词：在错的词下划一横线，并在该行右边横线上写出改正后的词。
注意：原行没有错的不要改。
One Sunday morning, Li Ming and his grandpa were feeded a
1. __________
bird in the cage. The bird was unhappy because it had enough food
2. __________
and waters. Li Ming didn’t know why.
3. __________
   The next morning on his way to the school, Li Ming saw some
4. __________
birds fly in the sky. Then he thought of the lonely bird in the cage.
5. __________
He decided to persuade his grandpa set the bird free. When he
6. __________
got home, he said to his grandpa, “Birds also need friends!” With
7. __________
his delight, his grandpa agreed him.
8. __________
    The bird was set free. Grandpa and the children were very
9. __________
happy to look the bird flying away into the sky.
10. __________
 
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