Air lines on a combination vehicle are often colored to keep them from getting mixed up. The emergency line is ___ and the service line is ___.

Red; Blue. Section 6.2: Red is emergency, Blue is service.

Air lines on a combination vehicle are often colored to keep them from getting mixed up. The emergency line is ___ and the service line is ___.

ANSWER BREAKDOWN
  • A. Correct. Red is emergency, Blue is service.
  • B. Incorrect. "Blue; Red" is not correct. Red is emergency, Blue is service.
  • C. Incorrect. "Black; Yellow" is not correct. Red is emergency, Blue is service.
  • D. Incorrect. "Red; Black" is not correct. Red is emergency, Blue is service.