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
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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
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
A.cofferdams
B.empty cargo spaces
C.gas tight bulkheads
D.areas equipped with power ventilation
A.cofferdams
B.empty cargo spaces
C.gas tight bulkheads
D.areas equipped with power ventilation
A.power ventilation
B.gooseneck vents and flame screens
C.at least two ducts extending to the weather deck
D.a vent header system
最新試題
During loading and discharging operations，in addition to when the cargo tanks have been properly filled，each inert gas system must be capable of maintaining a minimum gas pressure of（）.
One of the principal dangers inherent in liquefied petroleum gas is（）.
Each inert gas system gas main must have an automatic shut down valve at the outlet of the gas production plant. This valve must close automatically upon（）.
Regulations require that tankers handling grade B liquids shall have their cargo pumps separated from all sources of vapor ignition by（）.
Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because（）.
According to the Chemical Data Guide，1，3 - pentadiene possesses which characteristic? （）
Sour crude oil（）.
Releasing oil from the sea anchor of a survival craft may（）.
The deck water seal of the inert gas system（）.
Regulations require that pumprooms on tank vessels carrying grade C liquid cargo with machinery spaces below the freeboard deck be ventilated with（）.