Each lifeboat shall be launched with its assigned operating crew aboard and manoeuvered in the water at least______ during an abandon ship drill.(1.0)
A.once every month B.once every two months C.once every three months D.once every six months正确答案C
Each lifeboat shall be launched with its assigned operating crew aboard and manoeuvered in the water at least______ during an abandon ship drill.(1.0)
A.once every month B.once every two months C.once every three months D.once every six months正确答案C
