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单项选择题
A.screwing into
B.being screw on
C.to screw on
D.screwed into
单项选择题
A.bolts welded into the cylinder head
B.bolts welded into the cylinder frames
C.studs screwed into the cylinder head
D.studs screwed into the cylinder frames
单项选择题
A.fuel valve
B.lubricator
C.indicator valve
D.the starting valve
单项选择题
A.the beginning of the compression stroke
B.the beginning of the suction stroke
C.the end of the working stroke
D.the end of the exhaust stroke
单项选择题
A.repeatedly
B.quickly
C.gradually
D.immediately
单项选择题
A.forged
B.tapering
C.drilling
D.boring
单项选择题
A.an adequate supply of lube oil
B.an adequate supply of fuel oil
C.an adequate supply of turbine oil
D.an adequate supply of cylinder oil
单项选择题
A.forged
B.cast
C.made
D.shrunk
单项选择题
A.bending stresses弯曲应力
B.torsion stresses扭转应力
C.shear stresses剪应力
D.All of the above