单项选择题
A.sliding the camshaft along its axis
B.rotating the cam 180
C.rotating the cam followers 180
D.moving the idler sprockets in the drive chain
单项选择题 A diesel engine is equipped with an isochronous hydraulic governorA decrease in load will cause the engine speed to （）
单项选择题 The arrangement and shape of the cams on a diesel engine camshaft directly control which of the listed groups of operating conditions?（）
单项选择题 Corrosion inhibitors and/or soluble oils are added to diesel engine cooling systems to （）