单项选择题
A.diminishing the height of the seas B.lengthening the distance between successive crests C.increasing the height of the seas D.preventing the wave crests from breaking
Sour crude oil（）.A.contains high quantities of hydrogen...
单项选择题Sour crude oil（）.
A.contains high quantities of hydrogen sulfide B.is diluted with other products for carriage C.is lighter than other crudes D.is less hazardous to load than other crudes
Releasing oil from the sea anchor of a survival craft m...
单项选择题Releasing oil from the sea anchor of a survival craft may（）.
A.keep the propeller from being fouled B.increase propeller speed C.help calm the waves in the vicinity of the craft D.increase the holding power of the sea anchor
Reid vapor pressure is（）.A.exerted by liquid cargo on t...
单项选择题Reid vapor pressure is（）.
A.exerted by liquid cargo on the sides of a tank B.exerted by liquid cargo on a cargo hose body C.the lowest temperature and pressure that will cause a flammable liquid to give off vapors D.a measurement of the amount of flammable vapors given off by a liquid at a certain temperature
