题目内容

垃圾填埋场工程中采用HDPE膜防渗时，要严格检验HDPE膜的外观质量和（)，并组织产品复验和见证取垃圾填埋场工程中采用HDPE膜防渗时，要严格检验HDPE膜的外观质量和 ()，并组织产品复验和见证取样检验。

A. 均匀度
B. 厚度
C. 密度
D. 韧度
E. 强度

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When we stay with friends, it is polite to__________
[A] check emails
[B] chat with friends carefully
[C] send text messages
[D] make telephone calls

一副扑克牌有52张，最上面一张是红桃A，如果每次把最上面的10张移到最下面而不改变它们的顺序及朝向，那么，至少经过多少次移动，红桃A会出现在最上面？

下列选项中，影响权证理论价值的主要有（）。

Part C '
Directions :
You will hear three dialogues or monologues. Before listening to each one, you will have 5
seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece once only.
Questions ll-l3 are based on the following dialogue about travel information. You now have15 seconds to read Questions 11-13.
11. What is the relationship between the two speakers？
[A] Teacher and student.
[B] Shop assistant and customer.
[C] Travel agent and traveler.
[D] Bus driver and tourist.