单项选择题
Worn out ring grooves should be （） to standard dimension after being welded.
A.machined
B.bored
C.honed
D.drilled
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相关考题
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单项选择题
With VIT unit the timing of fuel injection of an engine can be regulated automatically according to the （）.
A.ship draft
B.pitch
C.engine load
D.oil viscosity -
单项选择题
With VIT the start of injection may be （） as the engine load is reduced within a certain range.
A.advanced
B.retarded
C.relayed
D.cut off -
单项选择题
With Variable Injection Timing the start of injection may be （）as the engine load is reduced.
A.advanced
B.retarded
C.kept constant
D.none of the above
