" If boarding a lifeboat or liferaft on an expected long period,

" If boarding a lifeboat or liferaft on an expected long period, when will you take food or water at the first time?

A.After l2 hours.

B.After 24 hours.

C.Within 48 hours.

D.Some food and water should be consumed immediately and then not until 48 hours later.

正确答案是B