单选题Before dismantling the pipe, would you （）the oil retained in the hose with （）?Aflash；fresh airBwash；fresh waterCflush；compressed airDrush；diesel oil
单选题
Before dismantling the pipe, would you （）the oil retained in the hose with （）?
A
flash；fresh air
B
wash；fresh water
C
flush；compressed air
D
rush；diesel oil
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