怎样降低电气触头的接触电阻？

Like many men at some point, I dream about opening a bar. I plan to call it Work Out. It will cater to married women in need of a little fun. On Friday nights, they will be able to come here and enjoy themselves.

See, I have a gift for business. I am, as my wife Zsa Zsa likes to note, “A man with a million ideas, none of them very good.” Speaking of Zsa Zsa, she is fed up with this plain little life I’ve made for us——too many kids, too many chores, mind – numbing debt. The other day, she said she thought we needed a new family car. “Sure. How about an 87 Lincoln?” I said, and saw my dear Zsa Zsa age about 20 years, and become her mother right before my eyes.

Yes, money is our madness. Last year, we thought we had found a little cushion when I published a book about the life here in suburban America. It sold 12 copies——six of them to my mother. Four other copies went to various aunts and uncles, who used them for martini coasters (杯垫), then sold them at yard sales. The two remaining copies went to perfect strangers. (I think I owe you dinner, whoever you are. Call me, OK? We’ll arrange something.)

When the book didn’t take off, I wrote a TV show. Then I penned a short novel based on the earlier TV idea that didn’t sell. Currently, I am at work on a set of encyclopedias(百科全书). In a month, I plan to sell them door – to – door.

Such is the life of a writer, sending off the most personal thoughts possible to his hard drive. I am a writer, but also the breadwinner in my family. I’m at the keyboard at 6 almost every morning, hoping to tap out one idea——just one——that will take us up the hill, to the mountain, to the top.

小题1:According to the passage, the author is leading a/an         life.

A．enjoyable

B．wealthy

C．hard

D．comfortable小题2:By saying “Sure. How about an 87 Lincoln?”, the author          .

A．promised it to his wife

B．was showing off their fortune

C．thought his wife would like it

D．was just joking小题3:What was the result of the book the author mentioned in the 3rd paragraph?

A．It didn’t sell well at all.

B．He sold it door – to – door.

C．He made a lot of money from it.

D．It was really a cushion for his family.小题4:What does the underlined word “cushion” mean ?

A．Comfortable seat.

B．Financial help.

C．Unexpected success.

D．Best-selling book.小题5:From the account above, which of the following statements is true?

A．He has a real gift for business.

B．He isn’t serious enough about life.

C．He is a hard – working writer.

D．His wife is satisfied with their plain life.

球旁复合体包括 、和。

电磁转差离合器调速又称滑差调速（简称电磁调速），调速系统是由普通笼型异步电动机、电磁转差离合器与控制器组成。请回答下列与电磁转差离合器调速系统有关的问题。

电磁转差离合器调速系统在任何转速下离合器的传递效率为分别为传动电动机转速和离合器的输出转速；离合器的转差率。请问离合器的传递效率η与转差率s之间的关系为（）。

A.η=1-s

B.η=1-s2

C.η=（1-s）2

D.η=s2-1

（）负责全国风电开发建设管理。

A.国家发改委

B.国家电监会

C.国家能源主管部门

D.各发电企业

兼有抗病毒、抗肿瘤作用的免疫增强剂是（）

A.左旋咪唑

B.卡介苗

C.环孢素

D.芸芝多糖

E.干扰素