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问题 选择题

下列属于发达国家的有（　　）

A．日本、法国、印度

B．中国、英国、美国

C．澳大利亚、德国、美国

D．新西兰、韩国、埃及

答案

根据经济发展水平的高低，世界上的国家划分为发达国家和发展中国家．

世界上的发达国家主要有美国、加拿大、英国、法国、德国、意大利、日本、澳大利亚、新西兰等．

故选：C．

单项选择题

For（）service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new（）for every packet sent. Instead, when a connection is established, a route from the（）machine to the destination machine is chosen as part of the connection setup and stored in tables inside the（）That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works. When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an（）telling which virtual circuit it belongs to.

With connection-oriented service, each packet carries an（）telling which virtual circuit it belongs to.

A．address

B．identifier

C．interface

D．element
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多项选择题

《企业所得税年度纳税申报表（A类）》第17行“免税、减计收入及加计扣除”，纳税人可以填报下列（）项目的所得。

A.牲畜、家禽的饲养

B.远洋捕捞

C.香料作物的种植

D.国债利息收入

E.从事符合条件的环境保护、节能节水项日的所得
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