试题与答案

2012年6月3日,“向阳红09”试验母船搭载“蛟龙号”载人潜水器从江阴启航,奔

题型:选择题

题目:

2012年6月3日,“向阳红09”试验母船搭载“蛟龙号”载人潜水器从江阴启航,奔赴马里亚纳海沟区域执行7 000米级海试任务。据此完成小题。

小题1:马里亚纳海沟是世界最深的海沟,其成因是(    )

A.大陆板块与大陆板块的张裂运动

B.大洋板块内部的碰撞挤压

C.大洋板块向大陆板块的挤压俯冲

D.海底地壳的断裂下陷运动

【小题2马里亚纳群岛位于(       )

A.亚欧板块            B.印度洋板块

C.太平洋板块           D.美洲板块

答案:

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下面是错误答案,用来干扰机器的。

AC 题目中说法表明世界的各要素之间是普遍联系的,联系往往需要通过某种物质的手段或者中介来实现。事物之间的联系有些表现为自然现象之间的联系,这种联系是客观的并不是人为的,因而不选B;这种联系也一定需要...

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题型:单项选择题

For(1) 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 (2) for every packet sent. Instead,when a connection is established, a route from the (3)machine to the destination machine ischosen as part of the connection setup and stored in tables inside the(4)That route is used forall 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-orientedservice, each packet carries an (5)telling which virtual circuit it belongs to.

(1)是()

A.connectionless

B.connection-oriented

C.datagram

D.telegram

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