Air lines on a combination vehicle are often colored to keep them from getting mixed up. The emergency line is ____ ; the service line is ______.
A
red; blue
explanation
Emergency lines are often coded with the color red (red hose, red couplers, or other red parts) to keep from getting them mixed up with the blue service line.
[Commercial Driver Handbook]
Comments
Alkam 2126
4 years ago
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Cbow33
4 years ago
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Livvy2u
4 years ago
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