  
                       .
              ϡ      .   ǐ     SA-2000   ϡ             (    )   ʡ          .       ǐ       (Check Box)       ϡ             (ComboBox)     ϡ                                .
       ǐ    ST-751   ϡ       (                       SA-2000     )   ǡ   D, C, B, A                        .   ǐ A          ϡ              ʡ         A    . 
       ǐ       ϡ          . 
                   D, C, B, A              .         D, C, B, A           . 
                  .

