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

2????????100?????

3??????????

4?300???qq

5???400?3????????

?????????????6?16???? ???????:??“80?????????????????”??????? ???????????????????

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

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

1984?????,??????????????????,???????????,????????,????????????????,????????????????????

?????????????????,?,?????“?”“?????”,???“???”,????????“????????????,?????”????2015????????,?????????????

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

“??,??????????????,??????????,?????????????”????,????????????,????????????????????????????X??,??????

??????,?????,?????????????,??????????????????????????????,???????????????DR?????????

????????????,?????????60????????????????????????,???????????????500????????????????????????????????????,????????CT???????????????????????

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

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

“?????????15??20????”??????????,???,???????,????,????????????

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

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

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

“????,????????????,?????????????????????,????????????????????????????????????????????,?????????,CT???????????????”??????(?????????????????)

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