M\u1ed9t s\u1ed1 \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd trong c\u00e1ch ch\u01a1i k\u00e8o \u0111\u1ed9i ghi b\u00e0n tr\u01b0\u1edbc \u2013 ghi b\u00e0n sau \u2013 kh\u00f4ng ghi b\u00e0n<\/span><\/h2>\nNg\u01b0\u1eddi ch\u01a1i \u0111\u1ebfn v\u1edbi lo\u1ea1i k\u00e8o n\u00e0y c\u1ea7n c\u00f3 cho m\u00ecnh m\u1ed9t s\u1ed1 l\u01b0u \u00fd nh\u1ecf d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 \u00e1p d\u1ee5ng th\u00e0nh c\u00f4ng:<\/span><\/p>\n\n- N\u1ebfu tr\u1eadn \u0111\u1ea5u di\u1ec5n ra c\u00f3 t\u00ecnh hu\u1ed1ng ph\u1ea3n l\u01b0\u1edbi nh\u00e0 th\u00ec b\u00e0n th\u1eafng \u0111\u00f3 \u0111\u01b0\u1ee3c t\u00ednh cho \u0111\u1ed9i c\u00f3 t\u1ef7 s\u1ed1.<\/span><\/li>\n
- Tr\u01b0\u1eddng h\u1ee3p tr\u1eadn \u0111\u1ea5u di\u1ec5n ra c\u00f3 s\u1ef1 c\u1ed1 ph\u1ea3i t\u1ea1m ho\u00e3n nh\u01b0ng \u0111\u00e3 c\u00f3 b\u00e0n th\u1eafng \u0111\u01b0\u1ee3c ghi th\u00ec b\u00e0n th\u1eafng \u0111\u00f3 v\u1eabn c\u00f3 hi\u1ec7u l\u1ef1c. Tuy nhi\u00ean khi kh\u00f4ng c\u00f3 b\u00e0n th\u1eafng n\u00e0o \u0111\u01b0\u1ee3c ghi th\u00ec \u0111\u01b0\u1ee3c xem l\u00e0 hu\u1ef7 k\u00e8o.<\/span><\/li>\n<\/ul>\n