About Survey

Embed Size (px)

Citation preview

  • 8/13/2019 About Survey

    1/1

    , 21 .

    : , ,

    .

    , , . .

    , ( ) ( ) 2010 11 30 , 2010

    .

    &

    , ,

    , , , , , &

    , , .

    ,

    . .

    / & / , &