單項選擇題

A 30，000 DWT tanker is required to have an IOPP certificate when（）

A.engaged in the coastwise trade
B.going foreign
C.calling at ports in another country signatory to MARPOL 73/78
D.carrying cargoes listed in the MARPOL regulations

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單項選擇題

Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.

A.the Customs
B.the Register Bureau of Shipping
C.the Shipyard Fire Department
D.a certified gas chemist

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A 30，000 DWT tanker is required to have an IOPP certificate when（）

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Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.

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A 30，000 DWT tanker is required to have an IOPP certificate when（）

Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.