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【单选题】
下列叙述有关网关最合适的是( )A.
网关既可用于扩展网络，又能在物理层上实现协议转换
B.
网关可以互联两个在数据链路层上使用的相同协议网络
C.
网关与其他网络间连接设备相比，有更好的异种网络互联能力
D.
网关从一个网络中读取数据，去掉该数据的原协议栈，而用另一个网络协议栈来封装数据
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皮皮学刷刷变学霸
举一反三
【单选题】Why did Penny want to lose weight?
A.
She wanted to have a baby.
B.
She'd had two children and gained weight.
C.
Her children kept telling she was fat.
D.
Her children don't like her.
【单选题】Why did Jim lose his previous job?
A.
There were problems with punctuality.
B.
There were disagreements with management.
C.
The company was bought by another company.
【单选题】Contrary to the opinion of the public, the chairman decided to appoint _______ he thought was equal to the job.
A.
who
B.
whomever
C.
whom
D.
whoever
【简答题】轨面不平顺,将使列车()产生共振,造成列车与轨道振动及行车噪声的产生,影响列车的平稳和舒适。
【单选题】The chairman says he needs an assistant that he can ______ to take care of problems that may occur in his absence.
A.
count on
B.
resort to
C.
look up to
D.
seek after
【单选题】Why did Hill lose his job? 查看材料
A.
He got angry with his boss．
B.
He always got to work late．
C.
He was frequently sick and absent from work．
D.
He made a mistake in the accounting．
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