A.proportional control B.integral control C.derivative control D.on-off control
A.fuel manifold B.lubricating pipe line C.auxiliary engine pipe line D.generator output line
A.Routine supervisory labor particularly the unproductive night-service labor is reduced B.Engine mal-operation is automatically sensed and manned C.The engine room need be manned at night in bad weather or close waters D.Some remedial measures can be taken automatically