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

<dl id="ilmrs"><strong id="ilmrs"></strong></dl>

<pre id="ilmrs"><acronym id="ilmrs"></acronym></pre>

單項(xiàng)選擇題

A system of cleaning the tanks by washing them with the cargo of crude oil while it is being discharged is known as（）.

A.cow
B.lot
C.cbt

你可能感興趣的試題

單項(xiàng)選擇題

A vessel emitting harmful substances into the air or spilling oil into the sea is a（）.

A.polluter
B.emitter
C.spiller
D.oiler

單項(xiàng)選擇題

A vessel restricted by its ability to manoeuver by the nature of its work or its deep draft is（）.

A.hampered vessel
B.giving way vessel
C.vessel not under control
D.disabled vessel