单项选择题
What is the proper first aid for LPG in the eye? （）
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
单项选择题 Upon release to the atmosphere，LFG readily（）.
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（）.
单项选择题 The weight of liquefied petroleum gas vapors as compared to air is（）.
