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
您可能感興趣的試卷
你可能感興趣的試題
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
A.that
B.which
C.who
D.these
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.above the floor plates of the bilges
B.above the carburetor level
C.at the lowest point of the bilge areas
D.at no particular level
最新試題
What is the proper first aid for LPG in the eye? （）
The airborne concentrations of substances (such as H2S) under which nearly all workers may be repeatedly exposed without adverse effects are called（）.
Upon release to the atmosphere，LFG readily（）.
Butadiene，inhibited，is labeled as a（）.
When fueling has been completed（）.
To determine the pressure and temperature limitations under which LFG is required to be transported on a barge，you should look at the（）.
Gasoline vapor tends to collect（）.
Which is NOT a safety precaution to be observed during the loading of LFG?（）
Name one major advantage of transporting gas under refrigeration.（）
Where should the tops of vents from gasoline tanks terminate?（）.