标准规定,制品型遇水膨胀橡胶止水条技术性能指标有。()A.拉伸强度 B.体积膨胀率

题型:多项选择题

问题:

标准规定,制品型遇水膨胀橡胶止水条技术性能指标有。()

A.拉伸强度

B.体积膨胀率

C.反复浸水

D.低温弯折性

考点:防水工考试防水工考试题库
题型:多项选择题

阅读理解。

     We can see a picture of a classroom. It is our classroom. It's small. We have 25 students in our class.

The walls(墙)are white and the desks and chairs are new. On the wall there is(有) a flag(旗子) and a

clock. There is a map of China, too. Some plants are on the desk  They are for our teacher, Miss Smith.

She likes her students. She comes to school early.

1. Our classroom is _____.

A. big      

B. small      

C. old  

D. interesting

2. We have _____students in our class.

A. thirty    

B. fifteen    

C. twenty-five

D. forty

3. _____ are one the wall.

A. A flag    

B. A  clock    

C. A flag and a clock

D. A watch

4. _____are on the desk.

A. Some books

B. Some plants

C. Some pens

D. Some plants

5. Our teacher is_____.

A. Miss Smith  

B. Mr. Smith

C. Mrs. Smith  

D. Smith Teacher

题型:多项选择题

试述爆燃产生机理。

题型:多项选择题

信源编码是()的编码,以提高通信的();信道差错控制编码是()的编码,以提高通信的()。

题型:多项选择题

整流器叶片的固定分为:().

A.直接固定和间接固定

B.直接固定和销钉固定

C.间接固定和榫头固定

D.单支点和双支点

题型:多项选择题

涅柔斯(Nereus)

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