参与外源性凝血途径的凝血因子是()
A.Ⅱ、Ⅲ
B.Ⅲ、Ⅶ
C.Ⅴ、Ⅶ
D.Ⅲ、Ⅸ
E.Ⅰ、Ⅷ
参考答案:B
If a davit-launched life raft aboard a vessel cannot be launched because of damage to the davit,you should().
A.inflate the life raft on deck
B.roll the life raft over the side
C.go to another life raft station
D.get a saw and cut the life raft free
法律没有规定的,民事活动应当遵守国家政策。 ( )