单选题How must each storage tank for helicopter fuel on a ship be marked?（）ADANGER - KEEP AWAYBDANGER - EXPLOSIVE VAPORSCDANGER - NO SMOKINGDDANGER - FLAMMABLE LIQUID
单选题
How must each storage tank for helicopter fuel on a ship be marked?（）
A
DANGER - KEEP AWAY
B
DANGER - EXPLOSIVE VAPORS
C
DANGER - NO SMOKING
D
DANGER - FLAMMABLE LIQUID
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