1. cho tr\u1ed1ng ch\u1ebft<\/strong><\/h3>\n\n\n\nKh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 \u0111\u1ed9 c\u1ee9ng cao l\u00e0 c\u1ea7n thi\u1ebft cho c\u00e1c b\u1ed9 ph\u1eadn l\u00e0m vi\u1ec7c c\u1ee7a khu\u00f4n d\u1eadp t\u1ea5m, trong khi kh\u1ea3 n\u0103ng ch\u1ecbu m\u00e0i m\u00f2n cao v\u00e0 \u0111i\u1ec3m n\u0103ng su\u1ea5t n\u00e9n \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi khu\u00f4n d\u1eadp t\u1ea5m d\u00e0y. \u0110\u1ec3 ng\u0103n ng\u1eeba g\u00e3y x\u01b0\u01a1ng ho\u1eb7c g\u00e3y l\u01b0\u1ee1i, kh\u1ea3 n\u0103ng ch\u1ed1ng g\u00e3y cao, \u0111\u1ed9 b\u1ec1n u\u1ed1n cao v\u00e0 \u0111\u1ed9 b\u1ec1n c\u0169ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u.<\/p>\n\n\n\n