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

2???????

3????????

4???????

5?????24????????

???????12?????????????18?? (?? ???)??,?????“??”??18?????????????

???18??16????????????13??,?19???????,????7?????????????????9????????9??10??7??8????9?????,?7?9????9?????????10???????????6??7?????????8??9?,?8???????9??????????10??11??7??8????????9???????10????????

??,?,??????18????????????????19???????,???????????4.0???5.3??,????3.5?????4.8??,??????????????????3.0??4.5??????????;?????????????????2.3?????3.3??;??1.8????????????????????2.8???

?12??,?????????????????????,??????,??

?,??,??;??????,????(AIS)??????????????,??????????????,????????????,??,??,?????????(???????) ????????????????:???