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【判断题】
三级交换网络的数字视频安防监控系统中三级交换机应采用三层交换机。A.
正确
B.
错误
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【单选题】The bicycling craze came in when we were just about at the right age to enjoy it. At first even 'safety' bicycles were too dangerous and improper for ladies to ride, and they had to have tricycles. My...
A.
belongs to a high social class
B.
comes from a middle class family
C.
didn't like to go bicycling with his parent
D.
felt it a glory to own a bicycle
【单选题】.We were just about ready to leave _____ it started to rain.
A.
when
B.
before
C.
after
D.
since
【单选题】—Why did you cancel your trip to the New York? —We were just about to leave_______ it started to snow．
A.
when
B.
before
C.
after
D.
since
【简答题】Translate the following sentences into Chinese. There is no rose without a thorn. It’s no use crying over spilt milk. What we lose on the swings we gain on the roundabouts. Other countries, other mann...
【简答题】阅读理解。 There were many beautiful buildings in ancient Rome, but the living conditions for ordinary people were bad. Most of their homes were so poorly made that they fell down or were fire hazards (=d...
【简答题】给你一个小玻璃瓶，不用其余的器材，设计两个发声实验，并简述发声原理（指声音是怎么产生的）． 实验一、实验步骤：______． 发声原理：______． 实验二、实验步骤：______． 发声原理：______．
【单选题】We were just ______ calling you up ______ you came in, ______ was unexpected.
A.
about when that
B.
on the point of as as
C.
on the point of when which
D.
on the point of as as
【简答题】The bicycling craze came in when we were just about at the right age to enjoy it．At first even “safety” bicycles were too erous and improper for ladies to ride, and they had to have tricycles．My m...
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