?λ?????,?λ????ι???,?λ????α?????
?λ????α??????淨(jìng)?????
???????淨(jìng)?????????????????μ???Σ?????μ?????????????????????μ??????????????????????齫???y?????
????????????20??55-21??00
??????????21??00-22??00
??????????????→?????(????????)
?淨(jìng)??
?????≥50??????????????????ɡ?
1???????????????(??????)??????????(??????????????)
2?????????????????????
?????飺50~69??????????70~89?????????飺89????
3??????????????→?????????????????????????????????????????
?????????顢????????????????????(??????????????????????)
?????????????????????????5????????????ν???50??????????????????
?????
1??????????????????????齫???y???
2????????????????????
3?????????ж?????????????????????????????????????