Stationary
Full floating
Semi-floating
Free rolling
单选题The bore of a diesel engine cylinder describes the （）A swept volume of the cylinderB inside diameter of the cylinderC piston displacement in the cylinderD length of the piston stroke
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单选题The position of （） on the crosshead on a large diesel engine is determined by dowel pins.A the guidewayB the piston rodC the crosshead shoesD the interlocked circlip
单选题The lube oil to lubricate the surfaces of the cylinder liners is spread over by the （）.A sliding piston ringsB engines camshaftC small pumpsD forced feed system
单选题Which term describes a group of packets sharing common forwarding characteristics?（）A common forwarding classB forwarding equivalence classC equivalent class characteristicsD forwarding class characteristics
单选题The main bearing shells are made of steel with a lining of bearing metal which may be white metal, copper-lead or aluminum-tin alloy What is the meaning of “which” in the sentence above?（）A main bearing shellsB main bearingC steelD bearing metal
单选题Which term describes piston pins having bearing surfaces in both the piston bosses and connecting rod eye?（）A StationaryB Full floatingC Semi-floatingD Free rolling
单选题Which term describes the process of encapsulating IPv6 packets inside IPv4 packets?（）A tunnelingB hashingC routingD NAT
