题目内容
Large,slow speed, two-stroke marine diesel engines offer the advantages of the following except( )
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Where will the thrust forces from the propeller be transferred to ( )through a thrust bearing?
Most medium-speed diesel engines are ( ),meaning that a controllable pitch propeller is both usually employed to cater for astern thrust.
The ( )engine usually be directly coupled to the propeller as the maximum efficiency of each can be matched at a suitable rotational speed.
The influence of frictional and residual resistances depends on how much of the hull is( )the waterline,while the influence of air resistance depends on how much of the ship is( )the waterline.
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