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【单选题】
文件有哪几种属性:A.
只读
B.
隐藏
C.
存档
D.
以上都是
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参考解析：
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皮皮学刷刷变学霸
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【简答题】What can be used to handle an oil spill?
【简答题】What can be used to clean up spilt oil in the of an oil spill?
【简答题】Crude oil must be and then can be used.
【单选题】Which of the listed conditions can be used to determine if lube oil has been diluted by fuel? .
A.
Viscosity is decreased
B.
Octane number is altered
C.
Pump speed is decreased
D.
Blower’s speed is decreased
【单选题】Satellite tracking and remote communication systems can be used to
A.
reduce oil consumption.
B.
remove the obstacles on the road.
C.
call for help when one's car crashes.
D.
help drivers get out of a traffic jam.
【单选题】A lube oil filter can be used to remove most contaminants from lube oil. A contaminant which will remain in the lube oil after filtering is ____.
A.
acid
B.
fuel oil
C.
sediment
D.
water
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