C\u01b0\u1ee3c d\u00e0n \u0111\u1ec1<\/strong><\/a> l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c ch\u01a1i x\u1ed5 s\u1ed1 ph\u1ed5 bi\u1ebfn. Trong \u0111\u00f3, ng\u01b0\u1eddi ch\u01a1i ch\u1ecdn ra m\u1ed9t nh\u00f3m s\u1ed1, c\u00f2n g\u1ecdi l\u00e0 “d\u00e0n” m\u00e0 b\u1ea1n tin r\u1eb1ng c\u00f3 kh\u1ea3 n\u0103ng cao s\u1ebd xu\u1ea5t hi\u1ec7n \u1edf gi\u1ea3i \u0111\u1ed9c \u0111\u1eafc c\u1ee7a ng\u00e0y h\u00f4m \u0111\u00f3. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a vi\u1ec7c ch\u01a1i d\u00e0n \u0111\u1ec1 l\u00e0 t\u0103ng t\u1ef7 l\u1ec7 th\u1eafng so v\u1edbi nh\u1eefng c\u00e1ch ch\u01a1i kh\u00e1c nh\u01b0 b\u1ea1ch th\u1ee7.\u00a0<\/span><\/p>\nN\u1ebfu nh\u01b0 v\u1edbi b\u1ea1ch th\u1ee7, b\u1ea1n ch\u1ec9 ch\u1ecdn m\u1ed9t s\u1ed1 duy nh\u1ea5t v\u00e0 c\u00f3 t\u1ef7 l\u1ec7 th\u1eafng r\u1ea5t th\u1ea5p (ch\u1ec9 kho\u1ea3ng 1%), th\u00ec c\u01b0\u1ee3c d\u00e0n \u0111\u1ec1 cho ph\u00e9p ng\u01b0\u1eddi ch\u01a1i ch\u1ecdn nhi\u1ec1u s\u1ed1 h\u01a1n. Th\u00f4ng th\u01b0\u1eddng s\u1ebd l\u00e0 kho\u1ea3ng 20 s\u1ed1 tr\u1edf xu\u1ed1ng, qua \u0111\u00f3 gia t\u0103ng t\u1ef7 l\u1ec7 th\u1eafng l\u00ean t\u1edbi 20%.<\/span><\/p>\nTuy nhi\u00ean, vi\u1ec7c ch\u1ecdn \u0111\u00fang d\u00e0n \u0111\u1ec1 c\u00f3 l\u1ebd h\u01a1i kh\u00f3 kh\u0103n \u0111\u1ed1i v\u1edbi c\u00e1c c\u01b0\u1ee3c th\u1ee7 m\u1edbi ch\u01a1i. M\u1ed7i cao th\u1ee7 l\u00f4 \u0111\u1ec1 \u0111\u1ec1u c\u00f3 nh\u1eefng chi\u1ebfn l\u01b0\u1ee3c v\u00e0 c\u00e1ch ph\u00e2n t\u00edch ri\u00eang \u0111\u1ec3 \u0111\u01b0a ra nh\u1eefng con s\u1ed1 ph\u00f9 h\u1ee3p. Nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 k\u1ebft qu\u1ea3 t\u1eeb c\u00e1c k\u1ef3 quay tr\u01b0\u1edbc, linh c\u1ea3m ho\u1eb7c nh\u1eefng c\u00f4ng c\u1ee5 d\u1ef1 \u0111o\u00e1n hi\u1ec7n \u0111\u1ea1i.<\/span><\/p>\nM\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh khi ch\u01a1i d\u00e0n \u0111\u1ec1 l\u00e0 s\u1ed1 v\u1ed1n b\u1ea1n \u0111\u1ea7u t\u01b0 v\u00e0o m\u1ed7i l\u1ea7n ch\u01a1i. D\u00f9 t\u1ef7 l\u1ec7 th\u1eafng cao h\u01a1n nh\u01b0ng s\u1ed1 ti\u1ec1n b\u1ea1n th\u1eafng \u0111\u01b0\u1ee3c c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ed1 v\u1ed1n b\u1ea1n b\u1ecf ra ban \u0111\u1ea7u. Do \u0111\u00f3, chi\u1ebfn l\u01b0\u1ee3c t\u1ed1i \u01b0u cho ng\u01b0\u1eddi ch\u01a1i l\u00e0 \u0111\u1ea7u t\u01b0 m\u1ed9t c\u00e1ch \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 k\u1ebf ho\u1ea1ch d\u00e0i h\u1ea1n thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o may m\u1eafn.<\/span><\/p>\n