cause eliminated life table

[名词解释] life table

[名词解释] abridged life table

[名词解释] current life table

[名词解释] 定群寿命表(cohort life table)

[单选题]In the navigation,_______cause the shafting over load most easilyA．stopping the main engine suddenlyB．changing the main engine running direction suddenlyC．the sailing from the shallow water area to the deep water areaD．the ship's trim too much

[单选题]Which one is NOT the cause of the generation gap?A． Young people like to choose their own lifestyles.B． American society is changing very fast.C． Parents place high hopes on their children.D． Modem education makes them think differently.

[单选题]What is a cause for the change of Stefania’s body clock?A． Eating fewer meals.B． Having more hours of sleep.C． Lacking physical exercise.D． Getting no natural light.

[单选题]what might be the cause if the children’s sickness?A． the crops didin’t dowellB．there were too many insectsC．the visits brought in diseasesD．the pesticides were overused

[单选题]What is a cause for the change of Stefania’s body clock?A．Eating fewer hours of sleep.B．Having more hours of sleepC．Lacking physical exercise.D．Getting no natural light.

[单选题]The cause of the death of the goldfish was most probably ______.A． lack of careB． old ageC． the small fish tankD． lack of water