液压牵引采煤机常用液压马达的形式有哪几种？

阅读理解。

     London is planning to host the 2012 Olympic Games. They will need to plan carefully. Local (当地的)

people are worried that plans were made carelessly and too quickly because the organizers wanted to win

the bid. So, while some Londoners are excited about what will happen, others are more worried. The

government is sure that the country will host a magnificent (宏伟的) Olympics. Here are just a few things

some ordinary people said in the week following the bid.

     —Paul Smith: It is really good news for the businesses in the area. London gets a lot of tourists anyway,

but this will bring more. Local people are thinking of things to do that will make the area more fun over the

Olympics and make money as well.

     —David Ford: London is busy anyway. I'm not sure that the government will get the transport right. The

underground and the buses are too full now. The underground is so full at rush hour that it is dangerous. It

will be ten times worse in 2012. I 'm going to rent out (出租) my flat and go on holiday when the Games

are happening!   

    —Pearl Armstrong: It's great! I We sport— it's exciting! I like to watch it and I like to play it. We will see

all these great athletes (运动员) at the Games. It will be good afterwards, because the stadiums and swimming

pools and so on will all still be there, so they will let us use them.

1. When will London host the Olympic Games?

A. 2008.

B. 2009.

C. 2010.

D. 2012.

2. According to Paul Smith, why are the Games good for the businesses in London?

A. Because Londoners have made careful plans for the Games.

B. Because Londoners are thinking of ways to make the area less crowded.

C. Because Londoners can make more money by tourism industry.

D. Because all Londoners will work as guides (导游) during the Games.

3. What seems like a biggest problem with London Olympics?

A. Transport service.

B. Telephone service.

C. Restaurant service.

D. Not enough stadiums.

4. What can we learn from the passage?

A. A lot of athletes will come to London for business.

B. Everything built for the Olympics will not be used after the Games are over.

C. Nearly all Londoners will rent their flats and go on holidays during the Games.

D. British government believes the future Games in London will be successful.

5. What's the meaning of the word "bid" in Chinese?

A. 举办权

B. 比赛

C. 民意

D. 服务

什么是天然气的发热量？

在下面横线上分别续写一个含“明”字的成语，然后加以解释。

　　在汉语里，含有“明”字的成语或熟语可以表示褒扬、赞美，例如“光明正大，”形容襟怀坦白，行为正派；再如① __________。含有“明”字的成语或熟语也可以表示批评、贬责，例如“明抢暗偷，”斥责公开抢劫、暗中偷盗的行为；再如②__________。

市场的客体通常是指( )。

A．买家

B．卖家

C．交易对象

D．交易价格

下列哪一项为白术的功效( )

A．益气健脾，燥湿利水，止汗安胎

B．益气健脾，燥湿利水，养血安神

C．益气健脾，燥湿利水，润肺止咳

D．益气健脾，燥湿利水，缓急止痛

E．益气健脾，燥湿利水，益卫固表