?? ???? ????????????5.6?
????:1?????????:??????
2?92?95???
3??????
4??????95?98??
5???????????
??1??????????30?? ?????????????,30??????????,?5.6?,???????21?6.4?????????
????????????????????????????,30?????10???11?,?5.6????????,???????????10???,??????????5?????,???10?4?????,???3.2????4.3??,??????
??????,?????,?????,?????????????????
????,30??????10??????????11?5.2?????????????(?) ??:?????????