单项选择题
A.cutting the old line off and renewing same
B.an approved servicing facility ashore
C.opening the case and replacing the entire line
D.one of the ship's officers
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（）.
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（）.