单项选择题
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
Name one major advantage of transporting gas under refr...
单项选择题Name one major advantage of transporting gas under refrigeration.（）
A.It increases its volume B.It reduces its volume C.It has less product per volume D.None of the above
LFG tank and pipeline maintenance should include（）.A.ex...
单项选择题LFG tank and pipeline maintenance should include（）.
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
It should be noted（）the use of synthetic mooring ropes ...
单项选择题It should be noted（）the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers，or any vessels carrying inflammable substances.
A.that B.which C.who D.these
