current life table

1、An inflation life raft should be lifed

An inflation life raft should be lifed back aboard the ship by using（）.Athe single hook at the top of the raftBtwo lines passed under the raftCthe towing bridleDAll of the above

2、life cycle

life cycle

3、Life cycle 生活史

Life cycle 生活史

4、abridged life table

abridged life table

5、定群寿命表(cohort life table)

定群寿命表(cohort life table)

6、life expectancy

life expectancy