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

2???????

3??????150????

4???????

5?????

??12??27??????? (?????????)12??????????????27?????????????????????14??,????7???????????PC-12?,1??20????,???

????? ??????

???????,???????????27????????????????????????????????????,????????????5????????????????????7??2??,??,???“?????????????????????”?

“?????????PC-12???????????????60???????,??1000??,????????????????”???

??,????,??????????1???20??,????????????????249??????????

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

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

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

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

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

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