单项选择题
A.reduce water temperature
B.reduce water turbulence
C.provide an air cushion
D.allow for an increase in water volume as the engine warms up
单项选择题 For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because （）.
单项选择题 An increase in the air inlet manifold pressure of a diesel engine will result in a/an （）.
单项选择题 The overspeeding of the diesel engine driving an electric generator could cause （）.