单项选择题
A.With gooseneck vents
B.With warning signs
C.With flame screens
D.With pressure-vacuum relief valves
单项选择题 How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）
单项选择题 How about deducting 10 bundles，（）is to say 50 bundles partly rusty?
单项选择题 Fearing damage from either or both of the above incidents，the Master now（）me this note of protest，reserving to himself the right to extend same at time and place convenient．