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(xiàng)選擇題

Progressive flooding on a ship is controlled by securing watertight boundaries and（）.

A.transferring drill water
B.dumping bulk materials
C.pumping out flooded compartments
D.evacuating the unit

你可能感興趣的試題

單項(xiàng)選擇題

On a vessel，the keel is the primary strength member of the lower hull form in which direction?（）.

A.transverse
B.diagonal
C.longitudinal
D.vertical

單項(xiàng)選擇題

On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.

A.acrylic acid
B.benzene
C.oleum
D.vinyl toluene

<ruby id="tmvql"><xmp id="tmvql"></xmp></ruby>

<dd id="tmvql"></dd>

<dl id="tmvql"></dl>