横越停留列车时,严禁钻车,必须从车钩上、车门处越过或在停留车()外绕过,并要防止提开

题型:单项选择题

问题:

横越停留列车时,严禁钻车,必须从车钩上、车门处越过或在停留车()外绕过,并要防止提开车钩,注意邻线来车。

(A)3m

(B)4m

(C)5m

(D)6m

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题型:单项选择题

Cats are the most popular pets among Americans. So it is not surprising there are many expressions about cats. Do you know any of them? Now let me introduce some to you.

Some cats like to catch small birds, like canaries. If someone looks very proud or satisfied with himself, we say he looks like the cat that ate the canary.

Sometimes, a cat likes to play with a small animal it catches. So if you play cat and mouse with someone, you change between different kinds of behavior when dealing with another person. For example, a child might offer something sweet to her little brother, and then take it away when reaches for it.

A cat will often catch a small animal and present it to its owner. The saying that looks like something the cat dragged in describes something in bad condition.

A fat cat is a person with a lot of money.

There are many other expressions about cats in America. How interesting! Which kind of cat are you, or which kind would you like to be?

小题1:Americans like ________ best as pets.

A.dogs

B.pigs

C.cats

D.mice小题2:The canary is a kind of ________.

A.dog

B.cat

C.bird

D.fish小题3: If you have much money, we can call you ________.

A.a fat cat

B.a happy cat

C.a thin cat

D.a sad cat小题4:If someone always thinks highly of himself, we can say _________.

A.he plays cat and mouse with someone

B.he looks like the cat that ate the canary

C.he is a lazy cat

D.he has dragged in something小题5:The passage introduces us ________ expressions about cat.

A.one

B.two

C.three

D.four

题型:单项选择题

下列现象中不能说明光沿直线传播的是(  )

A.晚上用手电筒照黑暗的天空的光芒

B.太阳躲在云层后面从云层缝隙中射出的光束

C.早晨太阳还在地平线下时我们就可以看到它

D.多媒体教室中投影仪投射出来的光

题型:单项选择题

关于RDW的叙述,错误的是()

A.贫血MCV/RDW形态学分类对贫血形态学鉴别诊断有参考价值

B.正细胞性贫血RDW可降低

C.缺铁性贫血RDW增高

D.β珠蛋白生成障碍性贫血RDW基本正常

E.小细胞低色素性贫血RDW可正常

题型:单项选择题

复述筒式导轴承(外冷式)工作过程。

题型:单项选择题

由于活塞杆磨损间隙大造成活塞式压缩机排气量不足的处理措施是更换()

A.排气阀

B.密封圈

C.活塞环

D.润滑油

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