危险废物填埋场中，如果天然基础层饱和渗透系数小于( )，且厚

搜题请搜索小程序“爱下问搜题”

问题单项选择题

危险废物填埋场中，如果天然基础层饱和渗透系数小于( )，且厚度大于5m时，可以选用天然材料衬层。

A．1.0×10^-5cm/s
B．1.0×10^-6cm/s
C．1.0×10^-7cm/s
D．1.0×10^-12cm/s

答案

参考答案：C

听力题

第II卷

第四部分写作（共35分）

第一节单词拼写(共10小题;每小题1分,满分10分)

根据所给汉语,写出单词的正确形式。

1.It’s ______(荒唐的) of him to say that the ban on smoking in public places will be removed.

2.Do you have any ______(以前的) experience of this type of work?

3.The book explores the relationship between religion and ______(文明).

4.This hotel can ______(为…提供住处, 容纳) up to 5,000 guests.

5.It’s many years since Mount Vesuvius last ______(爆发).

6.It is ________(绝对地) impossible for them to finish the task in just one day’s time.

7.Between Italy and France, there is a mountain______(山脉) called the Alps.

8.The report called for ______(紧急的) action to reduce lead in petrol.

9. She is one of the most ______(有影响的) figures in local politics.

10.In order to meet the increasing demands of electricity, the local government has determined to make a reservoir to ______(发电) electricity.

判断题

铣削加工直齿齿条，数量不多，且精度不高时，可作刻度盘移距法移位。