单项选择题
Diesel engine main and connecting rod precision bearings are made in halvesEach half exceeds one-half the bearing circumference by a small amountThe small amount is termed （）.
A.clearance
B.crush
C.pitch
D.thrust
点击查看答案&解析
相关考题
-
单项选择题
If an operating auxiliary boiler has a water pH reading of 7, you should （）.
A.bottom blow the boiler
B.treat the water with caustic soda
C.treat the water with chemical scavengers
D.reduce the water alkalinity to recommended readings -
单项选择题
Generating tubes in waste heat boilers are finned to （）.
A.reduce gas flow turbulence
B.prevent exhaust gas corrosion
C.increase the rate of combustion
D.increase the rate of heat transfer -
单项选择题
Directional intake ports in diesel engines are used to （）.
A.reduce air charge turbulence
B.induce air swirl
C.deflect hot combustion gas away from the valves
D.oppose the effects of piston induced squish
