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【简答题】
要给文件file1加上其他人可执行属性的命令。
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反馈参考答案：
举一反三
【单选题】依据U1PB阅读理解选择:. Seasonal maintenance often coincides with ________ maintenance
A.
level 1
B.
daily
C.
level 2
D.
monthly
【单选题】Seasonal maintenance often coincides with ________ maintenance.
A.
level 1
B.
daily
C.
level 2
D.
monthly
【单选题】Seasonal maintenance is timed to be carried out ________.
A.
once a year
B.
twice a year
C.
three times
D.
four times a year
【单选题】Seasonal maintenance often coincides with ________ maintenance.
A.
Level 1
B.
Daily
C.
Level 2
D.
Monthly
【简答题】Specified for seasonal maintenance are commonly the following operations: washing the cooling system, changing the lubricant in the engine crankcase and in the oil baths of other units (fresh oil of a...
【单选题】依据U1PB阅读理解选择:_ Seasonal maintenance is timed to be carried out ________.
A.
once a year
B.
twice a year
C.
three times
D.
four times a year
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