单项选择题
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 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
The shipboard oil pollution emergency plan will be inva...
单项选择题The shipboard oil pollution emergency plan will be invalid after （）
Prior to a ship’s departure, （） may not always be teste...
单项选择题Prior to a ship’s departure, （） may not always be tested.
A.fire fighting pump B.the steering gear C.life boat engine D.the main engine
