阀门的水压试验一般在()上进行,试验前应先将阀体内部空气全部排掉,其压力应在()内保

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问题:

阀门的水压试验一般在()上进行,试验前应先将阀体内部空气全部排掉,其压力应在()内保持不变。

考点:水泵检修工考试水泵检修工考试题库
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已知甲、乙、丙三种不同金属,甲在空气中加热后仍保持原金属光泽,乙在空气中会缓慢氧化而腐蚀,丙在空气中会迅速氧化需保存在煤油中,则甲、乙、丙三种金属对氧的化学活动性大小关系为(  )

A.甲>乙>丙

B.乙>丙>甲

C.丙>甲>乙

D.丙>乙>甲

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My l4-year-old son, John, and I spotted the coat at the same time in a second-hand clothing store. It stood out among big and old coats. It had beautiful tailoring and an unbelievable price: $28. I looked at my son and we both said nothing, but John’s eyes shone. Dark, woolen topcoats were popular with teenage boys, but they could cost several hundred dollars new. This coat was even better. John tried it on and turned from side to side, eyeing himself in the mirror. The fit was perfect.

John wore the coat to school the next day and came home with a big grin. “Did the kids like your coat?” I asked. “They loved it,” he said.

Over the next few weeks, John changed. He was polite, less argumentative, more thoughtful, and on the whole much happier. “Good dinner, mom,” he would say every evening. Without a word of objection he would carry in wood for the stove. One day when I suggested that he might start on his homework before dinner, John, who always put things off, said: “You’re right. I guess I will.” When I mentioned this incident to one of his teachers, she joked that the coat must have changed him.

John and I both know we should never mistake a person’s clothes for the real person within them. But there is something to be said for wearing a standard of excellence for the world to see, for practicing standards of excellence in thought, speech, and behavior, and for matching what is on the inside to what is on the outside. 

小题1:What does the author try to express in the first paragraph?

A.The coat looked like a magical coat.

B.They were good at shopping.

C.The coat was a real bargain.

D.They had the same taste in clothes.小题2:What does the underlined word “grin” in Paragraph 2 probably mean?

A.A wide smile.

B.A worried look.

C.A jealous spirit.

D.A joking tone.小题3:After John wore the new coat, the author found he _______.

a. was happier and better-behaved

b. received more praise from his teachers

c. was willing to follow suggestions

d. made rapid progress in study

e. would say sweet words to please her

A.a, b, c

B.a, c, e

C.b, d, e

D.c, d, e小题4:What message does the author intend to deliver in the article?

A.We should not judge people by their appearance.

B.Life is full of possibilities when we are young.

C.It’s beneficial to try different things in our lives.

D.What we wear could help shape who we are inside.

题型:填空题

战国时期新兴封建城市兴起的根本原因是 ( )

A.随着农业、手工业的发展,商业兴盛起来

B.成为诸侯国的都城

C.人口聚集了很多

D.作为封建地主阶级 * * 的中心

题型:填空题

美容师要在顾客()时,才可以下订单。

A.付款

B.离开

C.做护理

D.没有任何问题

题型:填空题

当前,全国营改增试点纳税人的实施范围包括()

A、交通运输业(铁路运输除外)

B、邮政业

C、部分现代服务业

D、快递服务

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