零件的耐磨寿命及其可靠性评价。

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问题:

零件的耐磨寿命及其可靠性评价。

考点:汽车修理工考试汽车修理工(技师)汽车修理工(技师)题库
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International free trade occurs when there are no barriers to trade. Countries can get a lot of benefits from free trade. (31) , all countries choose to adopt protection policies to some extent In this essay, I will give (32) of the arguments in favour of world free trade, describe the methods for the trade protection policies (33) countries erect to protect domestic industries and give the arguments which can be put (34) to justify protectionist policies.
Tariffs are taxes on (35) products. Sometimes, tariffs are known (36) imports duties and customs duties. They can be used (37) raise revenue. But, they are usually used to (38) imports and also to help domestic producers. The effect of imposing (39) tariff is to raise price for domestic consumers, and some consumers will switch consumption (40) imported goods to domestically produced substitutes. (41) are two types of tariffs. One is percentage taxes, it is based on
percentage of value of goods. (42) one is specific (fixed sum taxes), it is based on a fixed tax (43) unit or weight. Quota is a limit on the supply of goods or services. It can be imposed on exports. The domestic market share will increase because of (44) a limit on the quantity of imported goods. However, the price of protected goods will also rise because a quota is to reduce supply. Voluntary export restraint or restriction (45) similar to a quota, but this time the limit on imports arises from a voluntary agreement (46) the exporting and importing countries. For example, the UK had an agreement with Japanese car (47) that they should not take (48) than 10 percent of the UK car market. Exchange control means that a government control on foreign currency controls importers access to foreign currency. This is a (49) which was used by a number of European countries, (50) the UK, in the 1960s and 1970s and is still found in some developing countries.

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大风和上升气流有利于污染物扩散。下图为北京市某日5次观测到近地面气温垂直分布示意图。由此可判断,该日有利于PM2.5浓度降低的时段为

A.5-8时

B.8时前后

C.12-15时

D.5-20时

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下面是科学家为揭开糖尿病的发病原因,以狗为实验动物进行研究的结果:

对该实验结果的分析,不正确的是  [ ]

A.由A、C实验可知:胰岛提取液可防止糖尿的出现

B.由A、B实验可知:胰腺由内分泌部和外分泌部组成

C.由B、C实验可知:胰岛提取液是由胰岛细胞分泌的

D.该研究证明:糖尿病的发病可能与胰岛细胞的分泌物有关

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麻醉中遇到的气道困难是指()

A.病人在自主呼吸过程中发生通过托下颌也不易解除的舌后坠

B.病人在麻醉诱导、维持及麻醉结束气管拔管时发生支气管痉挛

C.病人在麻醉诱导或气管拔管时发生喉痉挛

D.正规训练且技术熟练操作仍发生面罩通气和(或)气管插管困难

E.在麻醉过程中意外发生气管异物

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债务重组有关未支付的或有应付金额,其处理方法为待结算时全部转入资本公积。 ( )

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