单选题Gasoline vapor tends to collect（）.Aabove the floor plates of the bilgesBabove the carburetor levelCat the lowest point of the bilge areasDat no particular level
单选题
Gasoline vapor tends to collect（）.
A
above the floor plates of the bilges
B
above the carburetor level
C
at the lowest point of the bilge areas
D
at no particular level
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