97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

<strong id="n45ra"></strong>

單項(xiàng)選擇題

In any case the draught of the vessel at the（）shall not be less than that which is necessary to obtain full immersion of the propeller.

A.forward perpendicular
B.amidships
C.longitudinal center of floatation
D.after perpendicular

你可能感興趣的試題

單項(xiàng)選擇題

In a transversely framed ship，the transverse frames are supported by all of the following EXCEPT（）.

A.girders
B.longitudinals
C.side stringers
D.web plates

單項(xiàng)選擇題

In a longitudinally-framed ship，the longitudinal frames are held in place and supported by athwartship members called（）.

A.floors
B.margin plates
C.stringers
D.web frames

<ruby id="72rs0"><output id="72rs0"></output></ruby>

<ruby id="72rs0"><xmp id="72rs0"></xmp></ruby>