The propeller consists of a______with several blades of helicoidal form attached to it.

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The primary function of the _______ is to provide the power to turn the propeller.

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the exposed portion of the outboard propeller shaft is protected against seawater corrosion by____

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In an AC synchronous motor electric propulsion plant, propeller speed is controlled by varying the .

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___ is used to moor the ship to the seabed to keep it stationary.A. The bulbous bow B. The anchor C. The bow thrusterD. The propeller

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单选题

The shaft consists of the crank shaft, the intermediate shaft and the propeller shaft. They are connected to each other by means of ______.

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