A、the Coast Guard
B、the ABS
C、the shipyard fire department
D、a certified marine chemist
更多“Before welding in a tank that has carried petroleum products，the tank must be certified by （）.”相关的问题
A、Tearing through the member is more likely in this type connection B、The weld may be broken by the stresses caused by riveting C、The weld increases the tensile stress on the rivet heads D、The welding must be completed before the riveting commences
A、the customs B、the Register Bureau of shipping C、the shipyard fire department D、a certified gas chemist
A、the Customs B、the Register Bureau of Shipping C、the Shipyard Fire Department D、a certified gas chemist
A、the customs B、the register bureau of shipping C、the shipyard fire department D、a certified gas chemist
A、An oxygen indicator B、A combustible gas indicator C、A combination combustible gas and oxygen indicator D、A flame safety lamp
A、cutting a square notch at each end of the crack B、drilling a hole at each end of crack C、slot-welding the crack D、welding a doubler over the crack
A、A.cutting a square notch at each end of the crack B、B.drilling a hole at each end of the crack C、C.slot-welding the crack D、D.welding a doubler over the crack
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