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问题 单项选择题

“4109单位客户在工行开户信息调整”和“4209个人客户在工行开户信息调整”交易可修改（）下挂账户的信息

A.客户编号

B.客户帐号

C.客户活折

D.贷款账户

答案

参考答案：A

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

水上撤离时翼上出口（）.

A.可以使用

B.不可以使用

C.在L2\R2们不能使用时可用

D.听机长指示
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