If your propeller is racing in rough weather，you should（）.

In using reduction gears to obtain efficient propeller speeds， （）.

Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）.

The linear motion of a diesel engine piston is converted to the rotary motion required to drive gears， propeller shafts， and generators by the （）.

He is ______ by both guilt and the need to avenge his father. A: propeller B: expelled C: propelled D: repelled

The four-stroke engine is used for （） and sometimes for main propulsion with a gearbox to provide a propeller speed of between 90 to 120 rev/min.

词汇与结构 During the takeoff right ______ will also be needed to compensate for engine torque and propeller “P” factor, which try to push the nose to the left as well.

What are the main restrictions on the maneuverability of the direct drive propulsion system when it is moving at a low speed?_____ A: Minimum stable speed of main engine B: Reduction gearbox speed C: Clutch performance D: Propeller size

"The train runs fast, all depends on the head of the car; the boat runs faster, the power is very important." The "power" here comes from the_____. A: ship propulsion plant B: ship electric power plant C: boiler equipment D: ship propeller

A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is （）. A: from the ship's propeller when making up aft B: from being overrun if making up forward C: hull damage while alongside passing a hawser D: getting in a tripping positio