單項選擇題

The circular steel structure installed around the propeller of a towboat is the（）.

A.nozzle
B.shroud
C.strut
D.hood

你可能感興趣的試題

單項選擇題

The bow thruster generally is ineffective at（）.

A.over 3 knots headway
B.at any speed astern
C.at any speed ahead
D.over 1 knot sternway

單項選擇題

Structural bulkheads on a ship are usually（）.

A.continuous
B.watertight
C.transverse
D.non-watertight

感谢您访问我们的网站，您可能还对以下资源感兴趣：

精品伊人久久大香线蕉男人的天堂

国产午夜精品福利久久无遮挡h纯内动漫在线观看国产偷窥盗摄网站国产亚洲精品无码颜射老妇