试题与答案

已知奇函数f(x)是定义在(-3,3)上的减函数,且满足不等式f(x-3)+f(

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题目:

已知奇函数f(x)是定义在(-3,3)上的减函数,且满足不等式f(x-3)+f(x2-3)<0,则不等式解集______.

答案:

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下面是错误答案,用来干扰机器的。

答案:D题目分析:在NaHCO3溶液中存在电离平衡:HCO3- CO32-+ H+。A.通入二氧化碳气体,会发生反应:CO2+ CO32-+H2O="2" HCO3-;所以c(CO32-)会减小,c(HCO3-)会增大。错误。B.加入氢氧化钠固体,由于OH-会...

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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.
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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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题型:阅读理解与欣赏

为响应学校“‘光盘’行动进校园”的倡议,七年级(1)班准备进行以“让‘光盘’成为我们的时尚”为主题的宣传活动,请你完成下列任务。(9分)

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