单项选择题
A.pumped up B.loaded C.discharged D.opened
Before replacing a piston you should check the rings to...
单项选择题Before replacing a piston you should check the rings to see that all clearances and gaps are within the permissible （）.
A.deflection B.discrepancy C.error D.tolerance
单项选择题Before replacing a piston you should check the rings to see that all clearances and gaps are （） the permissible tolerances.
A.above B.at C.over D.within
Before replacing a piston you should check that all rin...
单项选择题Before replacing a piston you should check that all rings are （）.
A.free B.fastened C.broken D.stuck
