เจ้าของคำถาม
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วันที่ 20 ??.?. 2550 11:22
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ส่งเมลหา
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- ???????????????????????????????????-70 ??? 100 ????????????
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- ?????????????????????? 20?? ??????????????????????????????
- ????????????????????????????????? 30 % ??????????????????????????
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- ????????????????????????? ????????????????? ????????????????????????
- ????????????????(K) = 0.0198-0.0221 ?????/???.
- ??????????????????(R) = 1.25 ?????/???.
- ?????????????????????( U ) = 0.8 ?????/???.
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