热镀锌退火炉高温段为什么要刷一层耐高温涂料?

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问题:

热镀锌退火炉高温段为什么要刷一层耐高温涂料?

考点:镀锌工考试中级镀锌工中级镀锌工题库
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It’s Really a Miracle (奇迹)

Mr. Clarke works in New York and he brought his family to China last summer. They visited many places of interest and had a good time here. Before they left for New York, the Clarkes climbed the Great Wall. It was the greatest project over two thousand years ago. They took a lot of photos there and then they had a picnic under a big tree. Suddenly it began to rain and they hurried to the car. And when they returned to the hotel, they couldn’t find the bag in which their expensive camera was. They were all sorry for it. They could buy another camera but had no time to go to the Great Wall again. They could not miss the plane!

That evening they didn’t have supper. Mr. Clarke hoped to make them happy, so he said, “Well, let me tell you a story. An old man lived in a sixty-storey building. One day he fell down from it when he was cleaning the window. But he didn’t hurt himself.”

“It was a miracle!” called out his children, “Why?”

“Because he lived on the first floor!”

They all began to laugh while two policemen with a bag came in. They said a Chinese boy found it under a big tree and he asked them to find out who lost it.

“It’s really a miracle!” the Clarkes said happily.

小题1:Where did the Clarkes enjoy themselves before they left for New York?

A.In London.

B.In Beijing.

C.In Shanghai.

D.In Hong Kong.小题2:Where did the Clarkes left their bag?

A.They left their bag on the Great Wall.

B.They left their bag in the car.

C.They left their bag under a big tree.

D.They left their bag in the plane.小题3:Why didn’t they have anything that evening?

A.Because they were sorry for losing the camera.

B.Because they were not hungry.

C.Because they had no time to have supper.

D.Because they had nothing to eat.小题4:What did Mr. Clarke tell a story to his family for?

A.His children asked him to do so.

B.He wanted to make his family happy.

C.He wanted to tell them a miracle.

D.He liked telling stories.小题5:Who found the bag?

A.Two policemen.

B.A Chinese boy.

C.A Chinese girl.

D.An American boy.

题型:问答题 简答题

We know that about seventy percent _____ the earth _____ covered by water.

A./; is

B.of; are

C.of; is

D.about; are

题型:问答题 简答题

下列物质用途与化学性质有关的是(  )

A.用生铁制铁锅

B.用16%的食盐水来选种

C.用木炭除去鞋柜、冰箱内的异味

D.氧气供给呼吸

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水泥胶砂强度检测时的试件尺寸是()。

A.40×40×160

B.150×150×150

C.40×40×40

D.70.7×70.7×70.7

题型:问答题 简答题

电力负荷的特点有()

A.变化有一定的规律性

B.可控

C.变化没有规律性

D.不可控

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