?? ?????????????????
????:1?????????:????
2????????????
3???????????
4?????????
5?????
1?16??????????20?,???19???????????157???????????800????????????????? ? 1??????16?????20??,??????????????????????19?????157??????????800??????????? ??????????? 1??16??????20?,????????19??????????????????????????157??800????????????? ?????????????????????????? 1??????????????????????????16??20??????????,???????????????????????19????157???????????800?????? ?? 1??????16???????????20??????????,????????????????????????????19??????????????????????????157???????????800??????????????????? ?? ???:?????