问题：
[单选] The connecting rod large end bearing shell generally has tags for location and oil grooves round the center of its axial length which correspond with grooves in the （） through which oil is transmitted up the rod to lubricate the small end.
connecting rod。piston rod。bearing housing。none of the above。
问题：
[单选] The cooler as the liquid becomes, （）.
the faster it will evaporate。the slower it will condense。the slower it will evaporate。the faster it will flow。
问题：
[单选] The cooling liquid used for the cylinder may be referred to as （）.
jacket water。make-up water。boiler water。flushing water。
问题：
[单选] The cooling of the piston is carried out by circulating （） across the underside of the crown and inside the ring belt or through specially shaped passages.
sea water。scavenging air。lubricating oil。fuel oil。
问题：
[单选] The cooling water is in direct contact with the outer surface of the liner as a result of which it is termed a （）.
water liner。wet liner。dry liner。drown liner。
问题：
[单选] The cooling water jacket is common to all the cylinders but there are often （） to ensure that each cylinder receives the right amount and flow of water.
dividing walls。divided walls。dividing liners。divided jacket。
问题：
[单选] The cooling water temperature （） over a period of 8 hours, and then shut down.
should be gradually increased。should be gradually reduced。should be constantly kept。should be varied up and dow。
问题：
[单选] The correct tightening is obtained by use of （） to measure the extension given to the bolts.
pressure gauges。stretch gauges。thermometers。bridge gauge。
问题：
[单选] The crank chamber oil （）.
can be recovered。is only supplied to cylinders。only feeds the main bearing。is a kind of detergent。
问题：
[单选] The crank pin journal is provided with large bores for （）.
lubrication。cooling。balancing purpose。ventilatio。
