问题 单项选择题

某沿海大桥是一座跨径为变截面预应力混凝土连续箱梁桥,分上下两幅,每幅单箱顶宽14.50m,底板宽7m,梁高由支点的2.75m渐变到跨中的1.80m。根据桥位处的地质情况和大桥本身的特点,采用逐段现浇,纵梁采用六四军用梁支架施工,在安装模板时,全面计算并设置了预拱度值,为防止桥墩与支架发生沉降差而导致墩顶处梁体混凝土开裂,采用自两边墩台向跨中分段浇筑的方法。混凝土达到设计强度后,张拉预应力筋,按要求和规定压浆。
根据此案例场景,回答下列问题:

后张法预制梁(板),当预制梁跨大于( )时,要按规定设置反拱。

A.20m

B.25m

C.30m

D.35m

答案

参考答案:A

阅读理解

One day, Mr. Smith went to a dinner party. He  was wearing  very old clothes. He came into the room. But people in the room didn’t look at him.They didn’t ask him to sit at the table. He wasn’t happy. But he said nothing.

Mr. Smith went home quickly(迅速地) and put on (穿上) his best clothes. He went back to the party. Everyone in the room stood up and looked at him. They gave him good food to eat.

Mr. Smith took off(脱下) his coat, and put it on the food and said, “Eat, coat(大衣)!”The other people were surprised and asked, “What are you doing? Why do you do that?”

Mr. Smith answered, “I am asking my coat to eat food. When I wore old clothes, you didn’t look at me. You didn’t ask me to sit down. Now I am wearing these nice clothes. And you give me good food. Now I see, you give the food to my coat, not to me.”

小题1:One day, Mr. Smith went to__________.

A.a birthday party

B.a dinner party

C.an English party

D.a movie小题2:When he came into the room,Why the people didn’t look at him?

A.Because the people didn’t ask him to come.

B.Because Mr. Smith wore old clothes.

C.Because Mr. Smith didn’t say hello to them first.

D.Because it was night, they didn’t see him.小题3:Why did he go home quickly?

A.Because he didn’t want to stay here.

B.Because he went home for his best clothes.

C.Because the people there asked him to leave.

D.Because he didn’t like the food there.小题4:What’s the meaning of “surprised”in Chinese?

A.高兴的

B.不满的

C.感到奇怪的

D.生气的小题5:What can you learn from the passage(文章)?

A.A person in good clothes should eat good food.

B.A good coat should eat good food.

C.We can’t judge(判断)a man by his clothes.

D.Mr. Smith is stupid(愚蠢的).

单项选择题