单项选择题
A.the cylinder cover B.the piston rings C.the piston crown D.the piston skirt
No specific period is given for the renewal of the lubr...
单项选择题No specific period is given for the renewal of the lubricating oil filter element as this should be done（） a figure of 0√7 bars is shown on the gauge.
A.whatever B.whenever C.wherever D.whoever
Modem engines make use of exhaust gas driven turbo-char...
单项选择题Modem engines make use of exhaust gas driven turbo-chargers to supply pressurized fresh air for （） and supercharging.
A.scavenging B.starting C.cooling D.blowing
Modem engines （） exhaust gas driven turbo-chargers to s...
单项选择题Modem engines （） exhaust gas driven turbo-chargers to supply pressurized fresh air for scavenging and supercharging.
A.make use of B.have made the use of C.by means of D.make advantage of
