单选题Starting motors，generators，and other spark producing devices should be mounted as high above the bilges as possible to（）.Akeep them dry when the bilges are full of waterBkeep them cool when the vessel is underwayCmake them more accessible for repairsDprevent accidental ignition of any gasoline vapors that may have accumulated in the bilges
单选题
Starting motors，generators，and other spark producing devices should be mounted as high above the bilges as possible to（）.
A
keep them dry when the bilges are full of water
B
keep them cool when the vessel is underway
C
make them more accessible for repairs
D
prevent accidental ignition of any gasoline vapors that may have accumulated in the bilges
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