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问题 单项选择题

关于汇编语言，以下叙述中正确的是______。

A．汇编语言源程序可以直接在计算机上运行

B．将汇编语言源程序转换成目标程序的软件称为解释程序

C．在汇编语言程序中，不能定义符号常量

D．将汇编语言源程序翻译成机器语言程序的软件称为汇编程序

答案

参考答案：D

解析： 计算机能直接识别或执行的语言是机器语言，其他形式的语言程序都要先翻译成机器语言才能运行。汇编语言是对机器语言的第一层抽象，将0、1序列表示的操作用符号表示，例如，用MOV表示数据传送、ADD表示相加运算等，因此汇编语言需要翻译，实现该翻译任务的软件称为汇编程序(或汇编器)。

填空题


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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多项选择题

债券借贷市场中，下列哪些操作不会影响询价成交行情？（）

A、修改一笔意向报价

B、多次修改对话报价相关数据

C、做了一笔债券借贷成交

D、新增一笔意向报价
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