A.they generate heat
B.they emit hydrogen
C.of the toxic fumes they emit
D.they recharge faster in a well ventilated space
您可能感興趣的試卷
你可能感興趣的試題
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
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
最新試題
Gasoline fumes tend to（）.
Gasoline vapor tends to collect（）.
LFG tank and pipeline maintenance should include（）.
Butadiene，inhibited，is labeled as a（）.
When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas)，you should （）.
Compared to the amount of concentrated foam liquid used，the amount of low expansion mechanical foam produced is（）.
The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.
Upon release to the atmosphere，LFG readily（）.
The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
The amount of LFG that may be loaded into a given tank is determined by（）.