Engine: Expired / Motor Plants and Auxiliary Boilers

1. A control the rate of fuel oil flow to the engines
2. B change fuel from heavy to light oil or vice-versa while insuring that oil is returned to the proper day tank
3. C act as an emergency fuel shut off, regardless of the fuel being used
4. D recirculate fuel through the heater during warm-up

Tip: press A-D to answer