单项选择题
A.pumped speed；came out B.pumping rate；overflowed C.flowing rate；leaked out D.flowed speed；spilled out
Worn out ring grooves should be （） to standard dimensio...
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
With VIT unit the timing of fuel injection of an engine...
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
With VIT the start of injection may be （） as the engine...
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
