电缆防电磁干扰的条件有哪些?

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问题:

电缆防电磁干扰的条件有哪些?

考点:铁路通信工铁路通信工综合练习铁路通信工综合练习题库
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阅读理解。

     Many boys and girls love watching TV. They spend many hours a day in front of the TV sets. But many

parents let their children watch TV only in special (特定的) time.

     TV shows are like books or movies. There are many kinds of TV shows,such as sitcoms. soap operas,

sports shows, fashion shows, etc. A child can learn good things and bad things from them. Some shows help

children to know the news all over the world. Children don' t have to go to the zoo to see animals. Boys and

girls can see sitcoms, sports shows and game shows at home. Some shows teach children how to cook or

how to use tools (工具).

     Many boys and girls think it is fun to watch TV, but it is also fun to read books, to play games or to visit

friend.

1. Many boys and girls spend _______.

A. 4 hour on TV shows on Sundays

B. 6 hours on TV shows every day

C. many hours a day in front of the TV sets

2. Many parents _______.

A. don't let their children watch TV

B. ask their children to watch TV

C. let their children watch TV in special time

3. From TV, boys and girls can _______.

A. learn good things and bad things

B. learn nothing

C. learn good things

4. Kids like to watch TV, because _______.

A. it is fun

B. they have nothing to do

C. it is exciting

5. How does the writer like the TV shows?

A. They are good for children.

B. They are bad for children.

C. Some of them are good for children and others are not.

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恶性骨肿瘤生化检查多为().

A.贫血

B.尿氟增高

C.尿酸增高

D.碱性磷酸酶可升高

E.以上均是

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患者一侧鼻唇沟变浅、口角轻度下垂,而皱额和闭目不受影响,可能损害的神经结构是()。

A.同侧面神经

B.同侧面神经核

C.同侧内囊

D.对侧内囊

E.对侧顶叶

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下面是关于两片8237级联构成主从式DMA控制器的叙述,其中正确的是 ( )

A.从片的HRQ端和主片的HRQ端相连,从片的HLDA端和主片的HLDA端相连

B.从片的DACK端和主片的DACK端相连,从片的DREQ端和主片的DREQ端相连

C.从片的HRQ端和主片的DACK端相连,从片的HLDA端和主片的DREQ端相连

D.从片的HRQ端和主片的DREQ端相连,从片的HLDA端和主片的DACK端相连

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( )是建筑物最下部的承重构件,它承受着建筑物的全部荷载并将这些荷载传给地基。

A.基础

B.地板与地面

C.地基

D.地下室

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