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


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1.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

2.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

3.單項(xiàng)選擇題A vessel, other than a rescue unit, designated to co-ordinate surface search and rescue operation within a specified area is known as().

A.salving vessel
B.co-ordinator surface search
C.mersar
D.the vessel being salved

4.單項(xiàng)選擇題A wind blows round anticlockwise defines().

A.backing ( of wind )
B.beach ( to )
C.veering ( of wind )
D.maintaining direction of the wind

5.單項(xiàng)選擇題Accidental escape of oil out of a tank when it gets too full because pumping was not stopped in time defines().

A.overloading
B.over discharging
C.overflow
D.overtaking