问题 单项选择题

某化工厂进行机电设备安装工程,主要是锅炉安装、空调安装和电线、电缆的安装工程。工程要求十分严格,部分设备要求采用优质碳素结构钢,锅炉采用耐高温材料,空调通风管道采用绝热材料,电线导管用防腐的塑料制品,电线采用BX或BV型,电缆采用VLV32或VV32型。安装完经检验合格后,交付使用。

高压锅炉的汽包材料常用()制造。

A.普通碳素钢板

B.低合金钢

C.不锈钢板

D.镀锌钢薄板

答案

参考答案:B

阅读理解

阅读理解。

     No one likes germs. You wash your hands often and avoid sick people. But some of the germiest places

are in your own home where you can't avoid them!

     Over 77, 500 bacteria per square centimeter can live in your kitchen sink drain. More bacteria live in and

around the sink itself. To get rid of them, clean the entire sink area with a disinfectant.

     Those wet clothes from your washer are not all that clean, especially if they include underwear. Use hot

water and bleach to wash underwear as it contains E.coli (大肠秆菌). Put wet laundry in the dryer quickly

so the bacteria do not multiply.

     The germs you wash off your body stay in the tub-about 15.500 bacteria per square centimeter! Use a

disinfectant to clean your tub weekly. And dry the tub with a clean towel so more germs won't grow on the

wet surface.

     You'll find plenty of germs outside your home too.

     Lots of germs live on the buttons of your local ATM. According to www.health.corn, Chinese researchers

tested 38 ATMs in downtown Taipei. They found that each button hosted an average of 1,200 germs. Use a

hand sanitizer after using the ATM and after handling paper money too.

     The bottoms of women's purses house tens of thousands if not millions of bacteria. University of Arizona

researchers discovered all kinds of different bacteria on purse bottoms. These included E.coli as well as

bacteria that cause eye and skin infections. Women should wipe their purses every few days with a mild soap

solution.

     All kinds of germs live on shopping cart shopping cart handles. Lots of people touch the handles each day-

and who knows where their hands have been! Carry disinfectant wipes and use them on the handles. That will

kill nearly all germs.

1. How many germy places are mentioned in this passage?

A. two

B. four

C. six

D. eight

2. What does the underlined word disinfectant mean in the second paragraph?

A. a kind of germ

B. a tablecloth

C. a kind of cleaning tool

D. a kind of chemical liquid which can kill germs

3. Which of the following statement is NOT true according to the passage?

A. Some of the germiest places are outside your home.

B. Use a disinfectant to clean your bathtub weekly.

C. Use a hand sanitizer after using an ATM or handling paper money.

D. Thousands of not millions of bacteria live on the bottoms of women's purses.

单项选择题