单项选择题
A.Moisture accumulation in winch motor damaging the electrical wiring
B.Freezing of gears in cold weather
C.Corroding of sheaves on the davits so they will not rotate
D.All of the above
单项选择题 Upon hearing the abandon ship signal，you put on your life jacket and report to your station. After the cover is removed you board your open lifeboat boat. The FIRST thing to do is to（）.
单项选择题 To keep injured survivors warm in the water after abandoning a ship，they should（）.
单项选择题 The type of davit on which you must turn a crank in order to swing the lifeboat out over the ship’s side is a（）.