单项选择题

The International Sewage Pollution Prevention Certificate (ISPP) is issued to （）

A.ships of above 200 GT to MARPOL
B.every ship of 400 GT and above
C.all ships
D.ships of more than 200 GT but less 400 GT

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单项选择题

A.one year
B.two years
C.four years
D.five years

单项选择题

A.one year
B.two years
C.four years
D.five years

单项选择题

A.fire fighting pump
B.the steering gear
C.life boat engine
D.the main engine