单项选择题
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
With four-stroke engines, it takes four revolutions of ...
单项选择题With four-stroke engines, it takes four revolutions of the crank shaft to make （） power stroke(s).
A.1 B.2 C.4 D.8
