        10         

4  10                 

     

                                                       5000                                                            

                                                                                                                         

                                                             

                                                         

                                                                                                                                  

                                                                                                                            

                                                                                         14                            

                                                                 

                                                                                                                                

                                                             

                                                                                                                                                                                                     

  4  3       7.3                              

                                                                       

      

       