问题 单项选择题

钢筋混凝土受弯构件挠度验算采用的荷载组合为:()

A.荷载标准组合

B.荷载准永久标准组合并考虑荷载长期作用影响

C.荷载频遇组合

D.荷载准永久组合

答案

参考答案:B

解析:徐变和收缩均随时间而增长,而徐变和收缩都将导致刚度的降低,使构件挠度增大,所以挠度验算应采用荷载效应标准组合并考虑荷载长期作用影响。

填空题

短文填空。根据下列短文内容,在短文后的空格处填上一个恰当的词,使短文完整、通顺。   

     People use their mouths for many things. They __1__, talk, shout and sing. They smile and they

kiss. In the English language, there are many expressions using the word "mouth". __2__ some of

them are not so nice.

     For example, if you say something __3__ about a person, the person might protest(抗议)and

say, "Do not bad mouth me." Sometimes, people say something to a friend or family member that

they later regret(后悔)because it hurts that person's feelings. Or they __4__ the person something

they were not supposed to tell. The speaker might say, "I really put my foot in my mouth this time."

That is to say, "I feel sad __5__ saying the wrong thing."

     Sometimes when one person is speaking, he says the __6__ thing that his friend was going to say.

When this happens, the friend might say, "You took the word right from my __7__ !" Sometimes

a person has a bad or unpleasant __8__ with another person. He might say that experience "left a

bad taste in my mouth." __9__ one person has had a very frightening experience, like being chased

by an angry dog, he might say, "I had my heart in my mouth."

     When we say someone "was born with a silver spoon(银勺)in his mouth", we mean the person

was born into a rich __10_.

1. _____    2. _____    3. _____    4. _____    5. _____

6. _____    7. _____    8. _____    9. _____    10. _____

单项选择题