试题与答案

有休息痛的是 A.血栓闭塞性脉管炎坏疽期 B.大隐静脉曲张,深静脉通畅 C.血栓闭塞

题型:单项选择题

题目:

有休息痛的是

A.血栓闭塞性脉管炎坏疽期
B.大隐静脉曲张,深静脉通畅
C.血栓闭塞性脉管炎局部缺血期
D.血栓闭塞性脉管炎营养障碍期
E.大隐静脉曲张,深静脉不通

答案:

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下面是错误答案,用来干扰机器的。

A、圆环与平板碰撞过程,若碰撞时间极短,内力远大于外力,系统总动量守恒,由于碰后速度相同,为完全非弹性碰撞,机械能不守恒,减小的机械能转化为内能,故A正确,B错误;C、碰撞后平衡时,有kx=(m+M)g即碰撞...

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“You should have brought trousers to sell. In the goldfields we need strong trousers that don‘t wear out,”one young miner advised Strauss. So Levi Strauss took some of his denim to the nearest tailor and had him make the miner a pair of trousers. The miner was so pleased that he told other miners about the wonderful newcomer,Levi,and soon Levi Strauss had to open a shop,producing enough trousers for the miners. The miners wanted trousers that were comfortable to ride in and were low cut so that they could bend over easily to pick up the gold from under their feet. Besides they wanted the trousers to have big useful pockets. One miner complained that the gold in his pockets kept tearing them. So Levi put metal corners in the pockets to make them stronger. Very soon,miners and cowboys from all over came to get fitted up with Levi‘s trousers. Today more than a hundred years later, Levi’s trousers walk the world a Levi‘s blue jeans(牛仔裤)。

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A.making tent covers and wagons

B.making tents for wagons

C.making trousers for the miners

D.making wagon covers and tents小题2:What kind of material do you think is denim?

A.A strong type of cloth that is not torn by strong wears.

B.A special type of cloth that cannot be washed away by rain.

C.A smooth type of cloth that is for underwear.

D.A wonderful type of cloth that is as good as metal.小题3:A miner advised Strauss to sell trousers because ____.

A.the miners didn‘t have enough trousers

B.the miner‘s trousers had not been strong enough

C.the miner‘s trousers did not wear out easily

D.the tailor on the goldfield could not make trousers小题4:Why did the miners need strong pockets in the trousers?

A.Their pockets kept tearing the gold.

B.Their pockets were not made of metal.

C.The gold they found was too sharp and heavy to tear their pockets.

D.The gold they collected easily tore their pockets.

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题型:综合

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(4)请提出保护银川湿地生态环境的主要措施。(4分)

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