????:1?????:??????

2???????????

3????????????

4?????

5????????

???7??????????23???? ????23??,6?????,???9.44???????,????8.89????5????,6?????10%,?9.7%?

??????????????????????,???????,6??????(1.84??????????????)?????????(1.64?????)??????(0.89???????)??(0.85??)?

?????????????????????,?????,????66.2??????(??1.02????);????,??????61.2?????????????????(???0.94?);?????,??56.3?????(?????0.87????)?(???) ????:?????