Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to().
单选题
2022-01-04 04:42
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