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

2?????

3?????????150

4???????

5???????????

?????????????????11????30??? (???? ????)??????????????????????30???????????????,11??????????50%,??0.2?????,????6??50%?????????????,???????

?,?????,???????????????????0.3????????????????0.9??;?????????????????;??????????????????????????????????????????????????????

????????????????,11???????????????,?????????????????????????50%,????????,?????,?????60%???????????????,????;???????52%??,????????????????;?55%???????????????,??????????????????,???????????

??,??????????????,?????,??,??????????????,???11???????????????,??,???????(???????????) ???:?????????