單項(xiàng)選擇題

What additional precautions should be taken when making temporary repairs to a ship that is operating when hydrogen sulfide is present?（）

A.Seal off all tank and compartment ventilation
B.Remove all bulk materials from the P-tanks
C.Provide respiratory protection and monitoring
D.All of the above

你可能感興趣的試題

單項(xiàng)選擇題

Ullages on tankers are measured from（）.

A.an above-deck datum such as the top of the ullage pipe
B.the tank ceiling aboard transversely framed vessels
C.the tank top
D.a thievage mark below the edge of the deck

單項(xiàng)選擇題

Ullages are measured from（）.

A.the tank ceiling
B.the tank top bushing
C.the thievage mark
D.an above deck datum