问题 问答题 简答题

钢筋闪光接触对焊接头如何进行质量检测?其标准是怎样规定的?

答案

参考答案:

在同条件下完成的焊接接头,每100个作为一批(不足100个时,亦按一批计),从中抽取6个试件(3个做抗拉试验,3个做冷弯试验)进行质量检测,在焊接条件不变并焊接质量较稳定的情况下,允许将每批内接头数量再适当增多,对焊接头的抗拉强度,应不低于该类钢筋的最低极限强度,并不应在焊接处发生断裂。对焊接头的冷弯试验,可在万能试验机、钢筋弯曲机或以人工弯曲进行。试件经冷弯后,在弯曲背面不发生裂纹,则认为质量合格。

(表达错误每次扣2-3分计10分)

解答题
阅读理解

C

I went to the Chinatown market in London last Sunday. The first thing I did was to go to one of the Chinese green grocers’ shops. As soon as I entered the shop, I smelt mixtures of Chinese spices and saw the new season’s fruits. My son wanted a bag of sweets, so we popped into the shop next door which sells many kinds of candy.

There’s a lot of noise in the Chinatown market and you will see many tourists too. There are a lot of cars and trucks that never stop beeping. While people are loading and unloading their goods, most of them have their cars and trucks parked in the middle of the road. This causes great inconvenience for other drivers. Can you imagine that?

After we had done all our shopping, my son and I went to a restaurant for lunch. We enjoyed our meal very much. But the shopping made us both very tired at the end. We headed down the road to catch our bus home. My son and I enjoyed riding in the bus. We also enjoyed looking at different buildings and people walking by dressed in fancy outfits. Although Chinatown can be a busy place to shop, I do enjoy going there now and then. I can buy some of my necessities, and I can also look and browse around the other shops and department stores where I can indulge (使沉迷) myself with some nice things. Chinatown is located in the heart of central London where you can find tons of shops and other places to amuse you. And for me, I certainly don’t mind going back there again soon.

51. The underlined words “popped into” most probably could be replaced by “_____”.

A. broke into            B. rushed into      C. pushed into                 D. walked into

52. The author probably didn’t go to a ______.

A. restaurant         B. grocery         C. clothing store            D. sweets shop

53. What can we learn from the passage?

A. Rich people won’t go to Chinatown for shopping.

B. The traffic conditions in Chinatown are not very good.

C. The food that the author ate in Chinatown didn’t taste good.

D. Chinatown has changed a lot since the author’s last visit.

54. From the passage, we can infer that the author most probably went to Chinatown by _____.

A. bike                    B. car             C. bus              D. motorbike

55. What does the last sentence of the passage imply?

A. The writer doesn’t have a good impression on Chinatown.

B. The writer won’t go to Chinatown for a long time.

C. The writer likes Chinatown because it’s near.

D. The writer will come to Chinatown again before long.