????:1?????vx:????vx

2?????

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

4?????????100?????

5??????????

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

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

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

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