單項(xiàng)選擇題As oil pipe line connections were broken,()quantity of oil was caused to spill onto the wharf and into the dock water.

A.a not knowing
B.an unknowing
C.an unknown
D.a not known


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題At the required fire drill conducted aboard a vessel, all person must report to their stations and demonstrate their ability to perform the duties assigned to them().

A.by the toolpusher
B.in the station bill
C.by the person conduction the drill
D.at the previous safety meeting

3.單項(xiàng)選擇題Backstaysare()。

A.running rigging leading aft from the masts
B.running rigging leading forward from the masts
C.standing rigging leading aft from the masts
D.standing rigging from the trees to the mast head

4.單項(xiàng)選擇題Be carefully when you()the derrick.

A.operate
B.operating
C.operated
D.operates

5.單項(xiàng)選擇題Before using a fixed C02 system to fight an engine room fire,you must().

A.secure the engine room ventilation
B.secure the machinery in the engine room
C.evacuate all engine room personnel
D.ALL of the above