单选题A lifeboat is weight tested by lowering to near the waterand loading to capacity with weight evenly distributed. Itis then lowered into the water and released. This test mustbe done at least once every（）.A6 monthsB12 monthsC18 monthsD24 months
单选题
A lifeboat is weight tested by lowering to near the waterand loading to capacity with weight evenly distributed. Itis then lowered into the water and released. This test mustbe done at least once every（）.
A
6 months
B
12 months
C
18 months
D
24 months
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