Because the air gets old and needs to be replaced
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Because compressed air contains some water which must be drained from the tanks
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To allow for a change in air pressure
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To remove bad air from the tanks
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Because the air gets old and needs to be replaced
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Because compressed air contains some water which must be drained from the tanks
|
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To allow for a change in air pressure
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To remove bad air from the tanks
|
Answer correctly : 0 | Wrong : 0
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