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

2????????

3????????

4?????qt

5?????

???2???8??????????????????????(????????????????????????? ????)???????“??????”,???“???”??8?,??????????????

?????????

????????????????????,????????“???????”??????????????????????,????????????,???????“?????”???

?????????????????

????,??,?????????120?????????????????“???”?????,????????????????,????????,??????????????????,?????????????

??????4??,?????????????????????????? ???

??????????“?????”???,??????????????,??????,??????????????,???,?????

????,???,??????????????,????,???????,??

????“??????????”,?????,??????????(?????????????)

????????????:?????????