单项选择题
A.IOPP B.type approval certificate C.cargo ship safety equipment certificate D.cargo ship safety certificate
The International Air Pollution Prevention Certificate ...
单项选择题The International Air Pollution Prevention Certificate (IAPP) 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
The International Sewage Pollution Prevention Certifica...
单项选择题The International Sewage Pollution Prevention Certificate (ISPP) is issued to （）
The IOPP certificate is valid for （）A.one yearB.two yea...
单项选择题The IOPP certificate is valid for （）
A.one year B.two years C.four years D.five years
