?? ???????4.7???? ??15???
????:1??????????:??????????
2????yp??
3???????????
4?????QT??
5???94?????
?11??22??? ???:11?22??20?40?(??????????23.21??????????????,?120.23???????)?4.7??,????15???
?? ???:????11??22??? ???:11?22??20?40?(??????????23.21??????????????,?120.23???????)?4.7??,????15???
?? ???:???????:1??????????:??????????
2????yp??
3???????????
4?????QT??
5???94?????
?11??22??? ???:11?22??20?40?(??????????23.21??????????????,?120.23???????)?4.7??,????15???
?? ???:???