                                                               
                                                                                                     7  8                                                                       1999              216             12  1          22                        3340      基碱对                                1859                           
                             23     100    30       22                   679   3340                                       22                                                                
          23         10              5000                 21             5000                  
            1989                     6                    2003                                                                                                                
           1％       3     3000                1400                    