單項(xiàng)選擇題“Stand by engine” means ().

A.prepare to stop the engine
B.assemble an engine on its bedplate
C.make an engine ready for starting
D.make an engine run steadily


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1.單項(xiàng)選擇題Smaller engines can be made more rigid than large ones and may not have ().

A.through bolts
B.turbo-chargers
C.bed plates
D.columns

2.單項(xiàng)選擇題Smaller engines can be made more rigid than large ones and may not have ().

A.through bolts
B.dividing walls
C.sloping surfaces
D.relative angles

3.單項(xiàng)選擇題Smaller engines can be made more rigid than large ones and may not have ().

A.connecting rods
B.crankshaft
C.crankcase
D.through bolts

4.單項(xiàng)選擇題Since the burning or combustion takes place within the engine itself, the engine is known as ().

A.a fire -tube boiler
B.an internal combustion engine
C.an external combustion engine
D.an internal combustion generator

5.單項(xiàng)選擇題Shims of different thicknesses are inserted between the shells to enable adjustment of ().

A.the bearing clearances
B.the bearing thickness
C.the bearing strength
D.the bridge hardness