问题：
[单选] Modem engines （） exhaust gas driven turbo-chargers to supply pressurized fresh air for scavenging and supercharging.
make use of。have made the use of。by means of。make advantage of。
问题：
[单选] Modem engines make use of exhaust gas driven turbo-chargers to supply pressurized fresh air for （） and supercharging.
scavenging。starting。cooling。blowing。
问题：
[单选] 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.
whatever。whenever。wherever。whoever。
问题：
[单选] Oil is supplied to the cylinder wall and （） by means of mechanical lubricators.
the cylinder cover。the piston rings。the piston crown。the piston skirt。
问题：
[单选] Oil pressure in the lubrication system is （） the static sea water head to ensure that sea water （） the stem-tube.
lower than；can lubricate。lower than；can cool。higher than；can enter。higher than ；cannot enter。
问题：
[单选] Oil will lubricate these parts （） effectively than water.
much。more。most。le。
问题：
[单选] On a diesel engine, fuel is delivered into the combustion space by （）.
a cooling system。a lubrication oil system。an electric system。an injection system。
问题：
[单选] On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the （）.
thrust block。sounding rod。connecting rod。push rod。
问题：
[单选] On opposite ends of a single shaft of a turboblower are a gas driven （）and a air compressor, which are sealed each other.
charge air receiver。scavenging air belt。turbine。air cooler。
问题：
[单选] On the top of the cylinder is mounted the cylinder cover which is pressed onto （） of the cylinder liner by means of nuts and studs.
the camshaft。the flange。the ridge。the bulge。
