保险防灾的方法包括法律方法、经济方法和（）。

A.技术方法

B.理赔方法

C.调查方法

D.分保方法

Which of following physical abilities is not required as to the routine movement around a vessel?（）

A.Maintain balance and move with agility

B.Climb up and down vertical ladders and stairways

C.Open and close watertight doors

D.Take part in vessel evacuation procedures