单项选择题
A.advanced B.retarded C.relayed D.cut off
With Variable Injection Timing the start of injection m...
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
With the shell and cap assembled as for running, a chec...
单项选择题With the shell and cap assembled as for running, a check must be made that the clearance between the cap and the housing （）.
A.has a nip B.is large enough C.is zero D.are suitable
With the crank in position in the engine, some measurem...
单项选择题With the crank in position in the engine, some measurements can be taken by a special bridge gauge and （）.
A.a micrometer B.a bowl C.a feeler gauge D.a wrench
