Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to().

A . be fitted with a positive fuel shut-off valve located at the tank B . have a shut-off valve at the top of the tank C . have a gate valve easily accessible in the space where the tank is located D . have a drain cock at the lowest point in the fuel line

时间:2022-09-02 05:45:20 所属题库:船员职务名称题库

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