?????????????????? ??????????????淨(jìng) ??????????
????????????淨(jìng)?????????? 9??30????????
??????????????
?淨(jìng)?????
(1)?????淨(jìng)???????????????
(2)???????似?????????????Ч????????????????λ??????????????????????????????滻???????(???????10??????????????似??)
????????
??÷?????Ч?????????????50%
?????????Ч??????к????????
????鶯???Ч??????????????????
????????Ч??????л??50
??????????Ч??????????????
??????????Ч???????????????????1??
?????????Ч???????100?????100???
????????Ч???????6??????????5?л?
(3)?????С?????????????????????????????
(4)??ò???????????????????
?????+11
?????+12
??????+10
??壺+12
???????+11
?????+10
????+20
???+15
(5)???????????????
?????????????6??
??????????????2????????????????
?????????????3????????????????