99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項選擇題

When is dock survey carried out?（）

A.During annual repair
B.Usually during dock repair
C.Before sea trial
D.After 5 years from last annual survey

你可能感興趣的試題

單項選擇題

（）, where a ship is refitted for a different use.

A.Voyage repairs
B.Routine docking
C.Damage repairs
D.Conversion

單項選擇題

（）, where extensive work, particularly to the ship’s structure may be repairedThese are the result of groundings collisions and other accidents.

A.voyage repairs
B.routine docking
C.damage repairs
D.conversion

<sup id="37hyu"><legend id="37hyu"><div id="37hyu"></div></legend></sup>