A.checking the loading sheet
B.loading to within 1 percent of outage
C.loading to within 10 percent of the safety relief valve setting
D.filling to the maximum level indicated on the liquid level gaging device
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A.exposure limits
B.concentration limits
C.threshold limit values
D.substance limit values
A.they generate heat
B.they emit hydrogen
C.of the toxic fumes they emit
D.they recharge faster in a well ventilated space
A.as it warms up it becomes heavier than air
B.the way it reacts with sea water
C.the strong odor it produces
D.its low temperature causes frostbite or freezing
A.It increases its volume
B.It reduces its volume
C.It has less product per volume
D.None of the above
A.exclusion of all sand and solid matter
B.cleaning with clean fresh or sea water
C.examination for fractures and pitting
D.All of the above
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What is the proper first aid for LPG in the eye? （）
Gasoline fumes tend to（）.
The weight of liquefied petroleum gas vapors as compared to air is（）.
Each ship having an inert gas system must have a portable instruments to measure concentrations of hydrocarbon vapor in inert atmospheres and also to measure（）.
Gasoline vapor tends to collect（）.
Where is thicker plating usually found in the construction of integral tanks on a ship? （）
Before starting a gasoline engine on a motorboat，you should make sure for safety that（）.
Gasoline tanks should be filled（）.
The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
What would you consult to determine the number of persons required on duty while loading a cargo of leaded gasoline on your tanker? （）