单项选择题
Inflatable liferafts shall be serviced at an approved servicing facility every 12 months or not later than the next vessel inspection for certification. However，the total elapsed time between servicing cannot exceed（）.
A.12 months B.15 months C.17 months D.18 months
单项选择题 Inflatable liferafts are provided with（）.
单项选择题 In evacuation from a ship，an individual without the option of a survival craft or liferaft should enter the water on the leeward side，except when（）.
单项选择题 If your vessel is equipped with inflatable liferafts，how should they be maintained?（）
