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

2???????

3???????100?????

4?????400??

5??????????

???10??12???????????????????????????????? (????????? ??????????????????)?12????,???????????????????,??1428????????????,??????????????????,???????

?,?????????2.39???,????????????????1.56????????????????????????,??????56.1%???,?????

????,??????????,????????????????????????,??,??????545?????????????,????124??????????,???????

?????????????125????????????????(?????)???,???????2.391??????,??99.87%;?????????????????????0.13%??????????????????????,???????????????????????????????????,??????,????????????“????????”?

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