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What is TRUE of pressure/vacuum valves?

A) They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tank. B) They should operate in advance of the pressure/vacuum breakers. C) They should be kept in good…

A cofferdam is __________.?

A) any deck below the main deck and above the lowest deck B) a member that gives fore-and-aft strength C) made by placing two bulkheads a few feet apart D) a heavy fore-and-aft beam under the deck E)NULL