问题 问答题 简答题

K4-73-01NO32离心式通风机的型号代表什么含义?

答案

参考答案:

K代表矿井用;4代表效率最高点的压力系数0、4的10倍;73代表效率最高点的比转速ns,取整数;0代表进风口为双面吸入;1代表该型号第一次设计结构;NO32代表通风机型号,即叶轮直径为3200mm。

阅读理解

In 1961, a man found a strange cat on his farm in Scotland. The cat’s ears were folded, bent forward, on its head. In fact, this was a new kind of cat. People named it the "Scottish Fold(苏格兰折耳猫)".

The Scottish Fold has a round head and large eyes. Its neck and legs are short, which makes it look very cute. Interestingly, all the Scottish Folds are born with straight and unfolded ears. And when they are growing up day by day, some cats’ ears will begin to fold. So, the Scottish Fold comes in two types: folded ears and straight ears.

Besides, there is a nickname for the Scottish Fold. It is the " Messenger of Peace". Why?

Because the Folds are sweet and friendly animals. They can get along well with other cats. And

unlike some other cats, they can even get along well with dogs! In many different environments, such as at a noisy house, or in a cat show, you can see them playing with other animals happily.

Well, when you come to a new school, do you think it’s difficult to adapt to the new environment? Perhaps you can learn from the Scottish Fold. That is: always be sweet and friendly to others.

小题1:Tie Scottish Fold _____.

A.is born with folded ears

B.is born with straight ears

C.always has folded ears

D.always has straight ears小题2: What does the Scottish Fold look like?

A.It has a round head and large eyes.

B.Its neck and legs are short.

C.It looks very cute.

D.All above.小题3: Why are the Scottish Folds named the " Messenger of Peace" ?

A.Because their ears are folded.

B.Because they look very cute.

C.Because they can get on well with other animals.

D.Because they can stay at a noisy house or in a cat show.小题4: According to the passage, what is the writer’ s suggestion to us when we are in a new

environment?

A.We should have a nickname.

B.We should learn from the cats.

C.We should get along well with dogs.

D.We should always be sweet and friendly to others.

单项选择题