The device used to limit engine torque at various engine speeds is called a （）

A.high cost of fuel
B.serious fire hazard
C.possibility of pollution
D.poor combustion which will occur in that cylinder

A.lube cooler failure
B.poor heat transfer
C.mechanical lubricator failure
D.camshaft seizure

A.pilot valve oil pressure
B.speeder spring force
C.compensation needle valve clearance
D.centrifugal force on the flyweights