A、a not knowing
B、an unknowing
C、an unknown
D、a not known
更多“As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.”相关的问题
A、A.Oil vapour in air piping are dangerous B、B.Explosion will cause oil vapouring in air lines C、C.Oil vapour in air piping should be drained D、D.Oil in air piping should not be drained
A、cargo fill B、line drop C、transfer D、branch line
A、fuel manifold B、lubricating pipe line C、auxiliary engine pipe line D、generator output line
A、the ventilation pipe B、the water line for fire fighting on the deck C、the fuel oil line D、the water supplying line in bath room
A、the steering gear room B、the fire fighting pipe line C、the fuel oil tank D、the bath room
A、by using of fresh water B、with compressed air C、by using of sea water D、with chemical compound
A、After stopping supplying sludge oil, the value and pipe should be flushed by flushed by diesel oil and the incinerator continue burning for 10 minutes B、Close auxiliary burner firstly and then close main burner C、After stopping fuel, restoring the position of main fuel supply valve D、Stop blower as soon as stopping supplying fuel oil
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