在有腐蚀性气体渗透作用的情况下,为防止容器内壁腐蚀,采用硫化橡胶板衬里时,衬里的方法

题型:单项选择题

问题:

在有腐蚀性气体渗透作用的情况下,为防止容器内壁腐蚀,采用硫化橡胶板衬里时,衬里的方法为( )。

A.衬两层硬橡胶

B.衬两层软橡胶

C.先衬一层硬橡胶,再衬两层软橡胶

D.衬两层半硬橡胶

考点:造价工程师建设工程技术与计量(安装)建设工程技术与计量(安装工程部分)
题型:单项选择题
阅读理解。
     What is your wish for the New Year? The following is some children's ideas.
John: I wish to be a better boy to Mum and listen to her more. I also want to get better grades in school.
Kate: My wish is to change my school as there's too much to study in this school.
Ann: I wish I could spend more time with Mum. She should stop working at the bank and take up a job
at our neighborhood toy shop.
Peter: I wish someone would find a way to help me walk with my only leg, so I can take part in activities 
         and sports that I'm unable to do now.
Mary: I wish that I could save all my money, so I could buy presents for my mother, father and big sister
         on their birthdays.
Bob: I wish for good health though I'm badly ill. I want to finish high school and take an IT course after.
Mark: I wish I could get more money to fix our house. There is a big hole in the wall and big mice run
         inside the room.
1. How many children have mentioned their parents in the passage?
A. All.
B. Four.
C. Three.
D. None.
2. Who is badly ill among the children?
A. Kate.
B. Peter.
C. Mary.
D. Bob.
3. What's Mark's wish?
A. To get better grades.
B. To change his-school.
C. To buy some presents.
D. To fix their house.
题型:单项选择题

下列各项表达中正确的是(  )

A.一CH3(甲基)的电子式为

B.乙炔的结构简式:CHCH

C.乙烷的结构简式CH3CH3

D.聚丙烯的结构简式:

题型:单项选择题

骨盆骨折易合併——损伤()。

A、膀胱直肠、 * *

C、胃、十二指肠

B、肺、隔肌

D、前臂

题型:单项选择题

铜及铜合金是焊接性良好的有色金属,焊接时不必采取特殊的工艺措施,就能获得质量满意的焊接接头。()

题型:单项选择题

计征土地增值税时,允许扣除旧房及建筑物的()。

A.房产原值

B.房产余值

C.房产评估价格

D.房产账面净值

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