对牺牲阳极阴极保护防腐工程的检查项目有()。 A.接线的极性是否正确 B.牺牲阳极材

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问题:

对牺牲阳极阴极保护防腐工程的检查项目有()。

A.接线的极性是否正确

B.牺牲阳极材料是否符合设计图纸

C.牺牲阳极安装位置是否符合技术文件

D.恒电位仪工作是否稳定可靠

E.被保护系统的保护电位是否达到最小保护电位

考点:机电工程1H413000工业机电工程安装技术1H413000工业机电工程安装技术题库
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To protect the environment, we are on the way. Here are a few things we can do.

Unwanted gifts? Give them away!

Have you ever received a gift that you didn’t like? Did you throw it away? If so, you can have another choice now. Two British companies hopes people will give away their unwanted gifts to them. And they will resell the gifts to raise money for the poor. In this way, the gifts can be refused and have a future life. And people can make a difference to the world.

Wear the trousers that reduce(减少) pollution!

A chemistry scientist and a fashion designer (时装设计师) have created a new kind of trousers. The trousers are made of a new material which can help reduce air pollution around us. Scientists have tested the material. The result shows that it isn’t harmful to human. This new kind of trousers may appear at the market in two years. Professor Ryan said, “If thousands of people wear the trousers, the air quality will be improved.”

Plant trees with Felix

Felix Finkbeiner, a 14-year-old German boy, is not famous as a child actor but an environment hero. At the age of 9, Felix got the idea that children could do something to protect the environment. So he started a club. Felix soon got support from children all over the world. Some of them have become his good friends. The club has an aim of planting 212 million trees. They have planted over 3.5 million trees all around the world. Felix said, “The answer to controlling global(全球的) warming is trees—lots of trees!”

小题1:The companies resell the unwanted gifts      .

A.to make the unwanted gifts useful

B.to help people learn to think carefully

C.to save money from it

D.to make money for themselves.小题2:The trousers mentioned in the passage         .

A.have been created by a physics scientist and a fashion designer

B.can help make air pollution less

C.will do harm to people

D.will be popular in two years小题3:Felix started a club          .

A.to become famous

B.to become a child actor

C.to protect the environment with other children

D.to make friends with the children around the world

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关于力,下列说法正确的是(  )

A.一个物体,不管受了多少个力的作用,施力物体只有一个

B.施力物体对受力物体施力的同时,一定受到受力物体对它力的作用

C.力是物体与物体间的相互作用,离开了物体,力是不存在的

D.静止物体是不受力的作用的

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免疫球蛋白替代疗法(immunoglobulinsubstitutiontherapy)

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下述哪种疾病不属于急腹症()

A.肝破裂

B.胃穿孔

C.胆系蛔虫症

D.肠扭转

E.铅中毒

题型:多项选择题

损伤性血胸,胸腔内积血不凝固的原因是

A.多种凝血因子的减少

B.胸腔内渗出液稀释

C.主要是凝血酶原减少

D.腔静脉出血

E.肺、心脏、膈活动去纤维蛋白作用

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