你可能感興趣的試題

In towing，heaving lines are used for（）.

A.passing a tow bridle to the tug
B.passing a messenger line
C.heaving in the tow bridle
D.service lines with rocket line throwers

單項(xiàng)選擇題

In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.

A.shock loading on the tow line is reduce
B.towing speed is improved
C.the vessel is more visible from the tug
D.the catenary of the tow line is reduced

In twin-screw engine installations while going ahead，maneuvering qualities are most effective when the tops of the propeller blades both turn（）.

你可能感興趣的試題

In towing，heaving lines are used for（）.

In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.

In twin-screw engine installations while going ahead，maneuvering qualities are most effective when the tops of the propeller blades both turn（）.

In towing，heaving lines are used for（）.