???????? ??150?????????

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

??8????????6?? (?????????????? ??????)???????????6??????,??6?8??,?????100~150??????

???,5??,?????????????????????????????

?????,?????????6????????????????????,??,???????????????????????;7???????????????,?????????????;8?????????????????????,?????????(30~50???????????????????????????),?(60~90??????????)?

????????????????????,??????,??,???(??????) ?????????????:???