??????????????8??????????????30? (???????? ?)??????30??????,??????,??,???1.8???

??????????

??,?????“?”“?????????????????????????????”“?????????????????????????????”??,?????????????????????????“??????????”??????2021????????????????????,?????

?,??,???5??,????17???????,?????????????????????????????????????????“????????????????????????????????????????????????????????????????????????”?????????,?????????????????????????????????????

??,????????,??????????????,???????????????????????1.8??????????,??,??????????????????

??,??,???????????????????????????????????????????????????????,????????,?7??????????????????

?????,??,??????,?????4520????????????????281.4?????????162??,????????(????????)

????????:???? ??“??????????”????

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

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

2?????vx

3?????????

4??????

5?????

??????????????8??????????????30? (???????? ?)??????30??????,??????,??,???1.8???

??????????

??,?????“?”“?????????????????????????????”“?????????????????????????????”??,?????????????????????????“??????????”??????2021????????????????????,?????

?,??,???5??,????17???????,?????????????????????????????????????????“????????????????????????????????????????????????????????????????????????”?????????,?????????????????????????????????????

??,????????,??????????????,???????????????????????1.8??????????,??,??????????????????

??,??,???????????????????????????????????????????????????????,????????,?7??????????????????

?????,??,??????,?????4520????????????????281.4?????????162??,????????(????????)

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