皮皮学,免费搜题
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【单选题】
FTP协议使用( )端口号来传输控制信号。
A.
20
B.
21
C.
25
D.
80
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A.
Start the car the moment everyone is seated.
B.
Leave the room for a minute with the iron working.
C.
Wait for an extra minute so that the steak tastes better.
D.
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A.
正确
B.
错误
【单选题】6 34. Linda ________her training in a joint company by the end of next month.
A.
finishes
B.
has finished
C.
had finished
D.
will have finished
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A.
①③
B.
①④
C.
②③
D.
②④
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A.
正确
B.
错误
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