判断肺结核的传染性，最主要依据是痰中带血。

臀部与大腿后侧深度烧伤瘢痕挛缩的修复植皮区用打包包扎，并用石膏绷带使髋关节固定于伸直位，固定时间以2～3周左右为宜，直至皮片完全愈合。()

     New York, London, Paris and other big cities are exciting places to live in.  There are many interesting things to see and to do. You can go to different kinds of museums and theaters to see plays and films. You can also go shopping to buy things from all over the world.But there are more serious problems in big

cities, too. The cost of living is high and there are too many people in some parts of big cities. Every year

many people move to the cities   because there are more chances to find work,  to study at good schools and to receive good medical care.   But sometimes these people can’t find work or a good place to live in.   Also too many people in such a small place make it hard to keep the cities safe and clean.    Some people enjoy living in big cities, but others don’t. When people move to big cities, they should think about the

problems of living there.

根据短文内容，完成下列各题。

1.How do people feel about living in the big cities?

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2.What are serious problems in big cities?

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3.All the people in the city can find work or a good place to live in, can’t they?

____________________________________________________________________________

4.文中画线句子的汉语意思是：

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5.What should they think about when they move to big cities?

____________________________________________________________________________

控制油液的压力、流量和流动方向，便可控制液压设备动作所要求的（）、（）和（）。

在向顾客配送过程中货物的破损率一般最高限额是( )。

A．5%

B．3%

C．2%

D．1%

广场用陶瓷砖吸水率平均值不大于（）%，单值不大于（）%。