单项选择题
A.Apply an ice pack to the eye B.Keep the eyelid closed C.Flush the eye with plenty of water D.Rub the eye area clean
Upon release to the atmosphere，LFG readily（）.A.vaporize...
单项选择题Upon release to the atmosphere，LFG readily（）.
A.vaporizes B.attacks caustically C.rises D.attacks corrosively
To determine the pressure and temperature limitations u...
单项选择题To determine the pressure and temperature limitations under which LFG is required to be transported on a barge，you should look at the（）.
A.Certificate of Inspection B.loading order C.rules and regulations for tankers D.tankerman's document
The weight of liquefied petroleum gas vapors as compare...
单项选择题The weight of liquefied petroleum gas vapors as compared to air is（）.
A.variable B.the same C.lighter D.heavier
