A.vaporizes B.attacks caustically C.rises D.attacks corrosively
A.mimimum oxygen content line B.critical displacement line C.critical dilution line D.upper threshold limit
A.settle near the bottom of the bilge B.settle near the top of the bilge C.settle evenly throughout all levels of the bilge by mixing with air D.disperse to atmosphere
A.odor B.color C.pressure D.density
A.Make periodic inspections of bilges B.Keep the barge under constant surveillance C.Have a properly certificated tankerman or at least one licensed officer on board the towing vessel D.Verify ullage readings
A.cooling the gas below the ignition point B.cutting off the supply of oxygen C.stopping the flow of gas D.interrupting the chain reaction
A.actuator B.annulus C.accumulator D.annular preventer
A.keel B.center of buoyancy C.tipping center D.amidships section
A.the gasoline tank is full B.the bilges，cabins，etc. are thoroughly ventilated C.you have fresh water on board D.Each of the above is followed
A.they generate heat B.they emit hydrogen C.of the toxic fumes they emit D.they recharge faster in a well ventilated space
微信扫一扫关注公众号后联系客服
微信扫码免费搜题
