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【单选题】
若要对数据进行字符转换和数字转换，以及数据压缩,OSI的()层上实现：A.
网络层
B.
传输层
C.
会话层
D.
表示层
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举一反三
【单选题】What can we infer from the passage?
A.
The state should provide protection for all the old people.
B.
The state has to create a suitable framework to restrict the private pensions.
C.
The state should protect those who can't support themselves.
D.
The state will play a secondary role in pensions due to more private pensions.
【单选题】The deposits should be scraped away
A.
The sediments are to be scraped away
B.
The dust is to be washed away
C.
The defects are to be set right
D.
The nuts of the bolts are to be tightened
【单选题】Before we move, we should ________ some of the old furniture, so that we can have more room in the new house.
A.
cancel
B.
conceal
C.
discard
D.
dissipate
【简答题】检查发电机转子滑环时,滑环的光洁度要 ,滑环的绝缘性应 。
【单选题】The saying “Old friends and old wine are best” means the things and people ____ we know are better than the unfamiliar.
A.
what
B.
which
C.
that
D.
who
【简答题】完形填空。 At our school,we sometimes have a special day to help others.Last year we went to an old people's 1 and sang songs and performed a play for 2 .The old people were very 3 .We should be allowed to...
【简答题】图案填充命令可以使用对话框操作来填充图形中的一个( )
【简答题】水环境的监测要从 、 及生活污水三个方面进行。
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