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【单选题】
路中心黄色虚线属于哪一类标线? A、指示标线 B、禁止标线 C、警告标志 D、辅助标线A.
选择1
B.
选择2
C.
选择3
D.
选择4
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反馈参考答案：
举一反三
【单选题】_________________, they had to take the taxi.
A.
There was no buses
B.
There being no buses
C.
There were no buses
D.
There are no buses
【单选题】______ no bus, we had to take a taxi to go to the station.
A.
There was
B.
There to be
C.
There had been
D.
There being
【单选题】_____, we had to take a taxi.
A.
There being no buses
B.
There been no buses
C.
No buses
D.
There being buses
【简答题】数据库文件中,主数据文件的扩展名是 _________ 、事务日志文件的扩展名是 _________ 。
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