Deck : Deck General - 1733/5076
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| On board small passenger vessels, ducts for compartments which contain gasoline powered machinery or gasoline storage tanks __________. |
| A) must not allow any appreciable vapor flow except through their normal openings |
| B) must be of rigid, permanent construction |
| C) must lead as directly as possible and be properly fastened and supported |
| D) All of the above |
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