Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
C\u00f3 t\u1ea5t c\u1ea3 3 lo\u1ea1i g\u01b0\u01a1ng kh\u00e1c nhau th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ecdi ng\u01b0\u1eddi nh\u1eafc \u0111\u1ebfn. \u0110\u00f3 ch\u00ednh l\u00e0 g\u01b0\u01a1ng ph\u1eb3ng, g\u01b0\u01a1ng c\u1ea7u l\u1ed3i, g\u01b0\u01a1ng c\u1ea7u l\u00f5m. Nhi\u1ec1u ng\u01b0\u1eddi cho r\u1eb1ng ch\u1ec9 c\u00f3 g\u01b0\u01a1ng ph\u1eb3ng m\u1edbi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u trong \u0111\u1eddi s\u1ed1ng. Th\u1ef1c t\u1ebf kh\u00f4ng ph\u1ea3i nh\u01b0 v\u1eady. N\u1ebfu b\u1ea1n quan t\u00e2m v\u1ec1 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m, t\u00ednh ch\u1ea5t g\u01b0\u01a1ng c\u1ea7u l\u1ed3i\u2026 h\u00e3y \u0111\u1ecdc ngay b\u00e0i vi\u1ebft n\u00e0y nh\u00e9. Tin r\u1eb1ng nh\u1eefng th\u00f4ng tin m\u00e0 ch\u00fang t\u00f4i chia s\u1ebb s\u1ebd kh\u00f4ng l\u00e0m cho b\u1ea1n th\u1ea5y th\u1ea5t v\u1ecdng. C\u00f9ng b\u1eaft \u0111\u1ea7u ngay th\u00f4i.<\/p>\n\n\n\n
\u0110a s\u1ed1 g\u01b0\u01a1ng \u0111\u01b0\u1ee3c l\u1eafp d\u1ea1ng h\u00ecnh tr\u00f2n<\/p>\n\n\n\n
\u0110\u1ecbnh ngh\u0129a v\u1ec1 g\u01b0\u01a1ng c\u1ea7u l\u1ed3i<\/p>\n\n\n\n
Cho nh\u1eefng ai th\u1eafc m\u1eafc g\u01b0\u01a1ng c\u1ea7u l\u1ed3i l\u00e0 g\u00ec, ch\u00fang t\u00f4i s\u1ebd gi\u1ea3i th\u00edch ngay cho b\u1ea1n. Chi\u1ebfc g\u01b0\u01a1ng n\u00e0y c\u00f2n c\u00f3 t\u00ean g\u1ecdi kh\u00e1c l\u00e0 g\u01b0\u01a1ng ph\u00e2n k\u1ef3 ho\u1eb7c g\u01b0\u01a1ng m\u1eaft c\u00e1. \u0110\u00e2y l\u00e0 g\u01b0\u01a1ng c\u00f3 b\u1ec1 m\u1eb7t, l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a d\u1ea1ng h\u00ecnh c\u1ea7u. Ch\u00fang c\u00f3 b\u1ec1 m\u1eb7t cong, ph\u1ea3n x\u1ea1 l\u1ea1i h\u01b0\u1edbng v\u1ec1 ph\u00eda ngu\u1ed3n s\u00e1ng.<\/p>\n\n\n\n
C\u00f3 th\u1ec3 hi\u1ec3u r\u1eb1ng g\u01b0\u01a1ng ph\u00e2n k\u1ef3 l\u00e0 m\u1ed9t lo\u1ea1i g\u01b0\u01a1ng, c\u00f3 ph\u00ecnh ra \u1edf r\u00eca ngo\u00e0i. Ch\u00fang ph\u1ea3n x\u1ea1 \u1edf g\u1ea7n r\u00eca v\u1edbi g\u00f3c r\u1ed9ng h\u01a1n, so v\u1edbi ph\u1ea7n trong t\u00e2m. T\u1eeb \u0111\u00f3 t\u1ea1o ra \u1ea3nh \u1ea3o v\u00e0 c\u00f3 \u0111\u1ed9 l\u1edbn kh\u00f4ng b\u1eb1ng v\u1eadt th\u1eadt. \u1ea2nh c\u1ee7a g\u01b0\u01a1ng ph\u00e2n k\u1ef3 nh\u1ecf h\u01a1n so v\u1edbi v\u1eadt th\u1eadt.<\/p>\n\n\n\n
T\u00ecm hi\u1ec3u th\u00eam v\u1ec1 g\u01b0\u01a1ng c\u1ea7u l\u00f5m<\/p><\/blockquote>\n\n\n\n
\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a g\u01b0\u01a1ng ph\u00e2n k\u1ef3<\/p>\n\n\n\n
M\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m g\u01b0\u01a1ng c\u1ea7u l\u1ed3i d\u01b0\u1edbi \u0111\u00e2y s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u th\u00eam \u0111\u01b0\u1ee3c v\u1ec1 chi\u1ebfc g\u01b0\u01a1ng n\u00e0y.<\/p>\n\n\n\n
\u1ea2nh c\u1ee7a g\u01b0\u01a1ng c\u1ea7u l\u1ed3i lu\u00f4n l\u00e0 \u1ea3nh \u1ea3o. Ch\u00fang c\u00f3 c\u00f9ng chi\u1ec1u v\u00e0 lu\u00f4n nh\u1ecf h\u01a1n v\u1eadt. L\u00fd do l\u00e0 b\u1edfi ti\u00eau \u0111i\u1ec3m F v\u00e0 t\u00e2m c\u1ee7a g\u01b0\u01a1ng l\u00e0 O \u0111\u1ec1u n\u1eb1m \u1edf kh\u00e1c ph\u00eda so v\u1edbi \u1ea3nh th\u1eadt. Ngo\u00e0i ra, n\u1ebfu nh\u01b0 \u1ea3nh c\u00e0ng l\u1edbn, c\u00f3 ngh\u0129a l\u00e0 \u0111\u1eb7t v\u1eadt c\u00e0ng g\u1ea7n v\u1edbi b\u1ec1 m\u1eb7t ph\u1ea3n x\u1ea1. \u1ea2nh s\u1ebd ti\u1ebfn t\u1edbi x\u1ea5p x\u1ec9 b\u1eb1ng k\u00edch c\u1ee1 th\u1eadt c\u1ee7a v\u1eadt n\u1ebfu nh\u01b0 v\u1eadt ti\u1ebfn s\u00e1t v\u00e0o b\u1ec1 m\u1eb7t ph\u1ea3n x\u1ea1.\n\n V\u00f9ng nh\u00ecn th\u1ea5y c\u1ee7a g\u01b0\u01a1ng ph\u00e2n k\u1ef3 kh\u00e1c v\u1edbi v\u00f9ng nh\u00ecn th\u1ea5y c\u1ee7a g\u01b0\u01a1ng ph\u1eb3ng. D\u00f9 c\u1ea3 hai c\u00f3 c\u00f9ng k\u00edch th\u01b0\u1edbc nh\u01b0ng v\u1eabn \u0111em l\u1ea1i s\u1ef1 kh\u00e1c bi\u1ec7t t\u01b0\u01a1ng \u0111\u1ed1i r\u00f5 r\u00e0ng. \u0110\u1ed1i v\u1edbi g\u01b0\u01a1ng c\u1ea7u l\u1ed3i, ch\u00fang c\u00f3 v\u00f9ng nh\u00ecn th\u1ea5y r\u1ed9ng h\u01a1n.\n\n G\u01b0\u01a1ng c\u1ea7u l\u1ed3i c\u00f3 \u0111\u1eb7c t\u00ednh c\u1ef1c k\u1ef3 th\u00fa v\u1ecb. Ch\u00fang c\u00f3 th\u1ec3 bi\u1ebfn m\u1ed9t ch\u00f9m tia t\u1edbi xong song tr\u1edf th\u00e0nh m\u1ed9t ch\u00f9m tia ph\u1ea3n x\u1ea1 ph\u00e2n k\u1ef3. Ngo\u00e0i ra c\u00f3 th\u1ec3 bi\u1ebfn \u0111\u1ed5i t\u1eeb m\u1ed9t ch\u00f9m tia t\u1edbi h\u1ed9i tr\u1ee5 tr\u1edf th\u00e0nh ch\u00f9m tia ph\u1ea3n x\u1ea1 ph\u00e2n k\u1ef3 ho\u1eb7c song song.\n\n \u1ea2nh c\u1ee7a g\u01b0\u01a1ng ph\u1ea7n k\u1ef3 l\u00e0 \u1ea3nh \u1ea3o, v\u00e0 ch\u00fang kh\u00f4ng th\u1ec3 h\u1ee9ng \u0111\u01b0\u1ee3c \u1edf tr\u00ean m\u00e0n ch\u1eafn.\n\n Kho\u1ea3ng c\u00e1ch v\u1eadt \u0111\u1ebfn g\u01b0\u01a1ng l\u1edbn h\u01a1n so v\u1edbi kho\u1ea3ng c\u00e1ch t\u1eeb \u1ea3nh \u0111\u1ebfn g\u01b0\u01a1ng.\n\n Ngo\u00e0i ra, \u1ea3nh qua g\u01b0\u01a1ng ph\u00e2n k\u1ef3 s\u1ebd nh\u1ecf h\u01a1n v\u1eadt.<\/code><\/pre>\n\n\n\n\u1ee8ng d\u1ee5ng c\u1ee7a g\u01b0\u01a1ng c\u1ea7u l\u1ed3i \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n
G\u01b0\u01a1ng c\u1ea7u l\u1ed3i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u \u0111\u1ec3 l\u00e0m c\u00e1c \u1ee9ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng. Ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m th\u00e0nh g\u01b0\u01a1ng chi\u1ebfu h\u1eadu, v\u00e0 d\u00f9ng cho xe \u00f4 t\u00f4 ho\u1eb7c xe m\u00e1y. Ngo\u00e0i ra, l\u00e0m g\u01b0\u01a1ng c\u1ea7u \u0111\u1ec3 thu\u1eadn ti\u1ec7n trong vi\u1ec7c quan s\u00e1t giao th\u00f4ng.<\/p>\n\n\n\n
\u1ee8ng d\u1ee5ng g\u01b0\u01a1ng c\u1ea7u l\u1ed3i trong th\u1ef1c t\u1ebf<\/p>\n\n\n\n
Kh\u00f4ng ch\u1ec9 c\u00f3 v\u1eady, ch\u00ednh nh\u1eefng chi\u1ebfc g\u01b0\u01a1ng n\u00e0y s\u1ebd l\u00e0 tr\u1ee3 th\u1ee7 \u0111\u1eafc l\u1ef1c tr\u00ean nh\u1eefng tuy\u1ebfn cao t\u1ed1c. C\u00f3 g\u01b0\u01a1ng c\u1ea7u l\u1ed3i, m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 quan s\u00e1t to\u00e0n b\u1ed9 cung \u0111\u01b0\u1eddng \u0111i. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n \u0111\u01b0\u1ee3c l\u01b0u th\u00f4ng t\u1ed1t h\u01a1n. B\u1edfi v\u1eady, nh\u1eefng vj tr\u00ed th\u01b0\u1eddng hay \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u00e0 kh\u00fac cua, khu v\u1ef1c c\u00f3 v\u1eadt c\u1ea3n h\u1ea1n ch\u1ebf t\u1ea7m nh\u00ecn, \u0111\u01b0\u1eddng g\u1ea5p kh\u00fac\u2026 Vi\u1ec7c n\u00e0y c\u00f3 th\u1ec3 gi\u00fap n\u1edbi r\u1ed9ng t\u1ea7m nh\u00ecn, quan s\u00e1t \u0111\u01b0\u1ee3c \u1ed5n th\u1ecfa d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n\n\n\n
M\u1ed9t c\u00e1ch s\u1eed d\u1ee5ng kh\u00e1c hay \u0111\u01b0\u1ee3c nh\u1eafc \u0111\u1ebfn, \u0111\u00f3 l\u00e0 \u0111\u1eb7t \u1edf c\u00e2y ATM. V\u1edbi c\u00e1ch l\u00e0m n\u00e0y, n\u00f3 c\u00f3 th\u1ec3 gi\u00fap cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 quan s\u00e1t \u0111\u01b0\u1ee3c t\u01b0\u01a1ng \u0111\u1ed1i \u1edf ph\u00eda sau. \u0110i\u1ec1u n\u00e0y gi\u00fap cho h\u1ecd an t\u00e2m r\u1eb1ng kh\u00f4ng c\u00f3 ai nh\u00f2m ng\u00f3 trong l\u00fac m\u00ecnh r\u00fat ti\u1ec1n. T\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 c\u1ea9n th\u1eadn h\u01a1n r\u1ea5t nhi\u1ec1u.<\/p>\n\n\n\n
C\u00e1ch v\u1ebd \u1ea3nh c\u1ee7a m\u1ed9t \u0111i\u1ec3m s\u00e1ng qua g\u01b0\u01a1ng ph\u00e2n k\u1ef3 nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n
C\u00e1ch v\u1ebd \u1ea3nh c\u1ee7a m\u1ed9t \u0111i\u1ec3m s\u00e1ng qua g\u01b0\u01a1ng ph\u00e2n k\u1ef3 kh\u00f4ng qu\u00e1 ph\u1ee9c t\u1ea1p. \u0110\u1ea7u ti\u00ean, ch\u00fang ta c\u1ea7n ph\u1ea3i \u0111\u1eb7t m\u1ed9t \u0111i\u1ec3m \u1edf tr\u00ean m\u1eb7t g\u01b0\u01a1ng. \u0110i\u1ec1u n\u00e0y t\u01b0\u01a1ng t\u1ef1 c\u00e1ch l\u00e0m \u0111\u1ed1i v\u1edbi g\u01b0\u01a1ng ph\u1eb3ng. Sau \u0111\u00f3, ta n\u1ed1i \u0111i\u1ec3m t\u00e2m O v\u1edbi g\u01b0\u01a1ng c\u1ea7u \u0111\u00f3. Ta s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c ph\u00e1p tuy\u1ebfn ON t\u1ea1i \u0111i\u1ec3m I.<\/p>\n\n\n\n
Ti\u1ebfp t\u1ee5c v\u1ebd ti\u1ebfp tia ph\u1ea3n x\u1ea1 c\u1ee7a tia s\u00e1ng SI v\u00e0 tia s\u00e1ng SK. Nh\u1eefng giao \u0111i\u1ec3m c\u1ee7a c\u00e1c tia ph\u1ea3n x\u1ea1 n\u00e0y ch\u00ednh l\u00e0 \u1ea3nh S\u2019. \u0110\u00e2y l\u00e0 \u1ea3nh \u1ea3o c\u1ee7a \u0111i\u1ec3m S \u0111i qua g\u01b0\u01a1ng ph\u00e2n k\u1ef3.<\/p>\n\n\n\n
T\u00ecm hi\u1ec3u th\u00eam \u1ea2nh c\u1ee7a m\u1ed9t v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m g\u00ec? Ki\u1ebfn th\u1ee9c l\u00fd 7<\/p><\/blockquote>\n\n\n\n
H\u01b0\u1edbng d\u1eabn gi\u1ea3i m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m v\u1ec1 g\u01b0\u01a1ng ph\u00e2n k\u1ef3<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m r\u1ea5t th\u01b0\u1eddng hay xu\u1ea5t hi\u1ec7n v\u1ec1 g\u01b0\u01a1ng ph\u00e2n k\u1ef3. Ch\u00fang kh\u00f4ng ch\u1ec9 gi\u00fap c\u00e1c em nh\u1edb \u0111\u01b0\u1ee3c ki\u1ebfn th\u1ee9c, m\u00e0 c\u00f2n nhanh nh\u1ea1y h\u01a1n khi g\u1eb7p trong b\u00e0i thi. H\u00e3y c\u1ed1 g\u1eafng t\u1ef1 m\u00ecnh l\u00e0m h\u1ebft nh\u1eefng b\u00e0i t\u1eadp n\u00e0y. Sau \u0111\u00f3 so s\u00e1nh v\u1edbi \u0111\u00e1p \u00e1n \u0111\u00fang m\u00e0 ch\u00fang t\u00f4i \u0111\u01b0a ra. N\u1ebfu nh\u01b0 c\u00e2u n\u00e0o c\u00e1c em l\u00e0m sai, h\u00e3y note l\u1ea1i v\u00e0 h\u1ecdc k\u1ef9 ki\u1ebfn th\u1ee9c \u0111\u00f3. \u0110i\u1ec1u n\u00e0y s\u1ebd gi\u00fap cho l\u1ea7n t\u1edbi c\u00f3 g\u1eb7p \u0111\u01b0\u1ee3c d\u1ea1ng b\u00e0i n\u00e0y, c\u00e1c em s\u1ebd nh\u1edb v\u00e0 kh\u00f4ng \u0111\u1ec3 m\u00ecnh b\u1ecb sai n\u1eefa.<\/p>\n\n\n\n
V\u1ebd h\u00ecnh g\u01b0\u01a1ng c\u1ea7u l\u1ed3i ph\u00f9 h\u1ee3p<\/p>\n\n\n\n
B\u00e0i t\u1eadp tr\u1eafc nghi\u1ec7m v\u1ec1 g\u01b0\u01a1ng ph\u00e2n k\u1ef3<\/p>\n\n\n\n
C\u00e2u 1: \u1ea2nh \u1ea3o t\u1ea1o b\u1edfi g\u01b0\u01a1ng c\u1ea7u l\u1ed3i l\u00e0 g\u00ec?<\/p>\n\n\n\n
A \u1ea2nh \u1ea3o nh\u1ecf h\u01a1n v\u1eadt<\/p>\n\n\n\n
B C\u00f3 th\u1ec3 v\u1eeba l\u00e0 \u1ea3nh \u1ea3o, v\u1eeba l\u00e0 \u1ea3nh th\u1eadt t\u00f9y v\u00e0o v\u1ecb tr\u00ed m\u00e0 ta \u0111\u1eb7t v\u1eadt<\/p>\n\n\n\n
C \u1ea2nh th\u1eadt c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n v\u1eadt<\/p>\n\n\n\n
D \u1ea2nh \u1ea3o c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n v\u1eadt<\/p>\n\n\n\n
C\u00e2u 2: Quan s\u00e1t m\u1eb7t ph\u1ea3n x\u1ea1 c\u1ee7a g\u01b0\u01a1ng ph\u00e2n k\u1ef3. M\u1eb7t ph\u1ea3n x\u1ea1 c\u1ee7a g\u01b0\u01a1ng l\u00e0<\/p>\n\n\n\n
A M\u1eb7t ph\u1eb3ng gi\u1ed1ng nh\u01b0 g\u01b0\u01a1ng ph\u1eb3ng<\/p>\n\n\n\n
B M\u1eb7t l\u1ed3i l\u00ean c\u1ee7a ch\u1ecfm c\u1ea7u<\/p>\n\n\n\n
C M\u1eb7t l\u00f5m xu\u1ed1ng c\u1ee7a ch\u1ecfm c\u1ea7u<\/p>\n\n\n\n
D 3 \u0111\u00e1p \u00e1n A, B, C \u0111\u1ec1u \u0111\u00fang<\/p>\n\n\n\n
C\u00e2u 3: Ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang khi nh\u1eafc \u0111\u1ebfn t\u00ednh ch\u1ea5t \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt, \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi g\u01b0\u01a1ng c\u1ea7u l\u1ed3i?<\/p>\n\n\n\n
A, Ch\u00fang kh\u00f4ng h\u1ee9ng \u0111\u01b0\u1ee3c \u1edf tr\u00ean m\u00e0n, v\u00e0 c\u00f3 k\u00edch th\u01b0\u1edbc b\u1eb1ng v\u1edbi v\u1eadt<\/p>\n\n\n\n
B, Ch\u00fang c\u00f3 th\u1ec3 h\u1ee9ng \u0111\u01b0\u1ee3c \u1edf tr\u00ean m\u00e0n, v\u00e0 c\u00f3 k\u00edch th\u01b0\u1edbc b\u1eb1ng v\u1edbi v\u1eadt<\/p>\n\n\n\n
C, Ch\u00fang c\u00f3 th\u1ec3 h\u1ee9ng \u0111\u01b0\u1ee3c \u1edf tr\u00ean m\u00e0n, v\u00e0 c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n v\u1eadt<\/p>\n\n\n\n
D, Ch\u00fang kh\u00f4ng th\u1ec3 h\u1ee9ng \u0111\u01b0\u1ee3c \u1edf tr\u00ean m\u00e0n, v\u00e0 c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n v\u1eadt.<\/p>\n\n\n\n
C\u00e2u 4, So v\u1edbi g\u01b0\u01a1ng ph\u1eb3ng c\u00f3 c\u00f9ng m\u1ed9t k\u00edch th\u01b0\u1edbc, v\u00f9ng nh\u00ecn th\u1ea5y c\u1ee7a g\u01b0\u01a1ng c\u1ea7u l\u1ed3i \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n
A, \u0110\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 h\u1eb9p h\u01a1n<\/p>\n\n\n\n
B, \u0110\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 r\u1ed9ng h\u01a1n<\/p>\n\n\n\n
C, \u0110\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 b\u1eb1ng nhau<\/p>\n\n\n\n
D, T\u00f9y theo \u0111\u1ed9 l\u1ed3i c\u1ee7a g\u01b0\u01a1ng s\u1ebd cho ta bi\u1ebft \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng h\u00ecnh \u1ea3nh.<\/p>\n\n\n\n
C\u00e2u 5, Nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0o sau \u0111\u00e2y n\u00ean s\u1eed d\u1ee5ng g\u01b0\u01a1ng ph\u00e2n k\u1ef3?<\/p>\n\n\n\n
A, Khi l\u00e0m g\u01b0\u01a1ng chi\u1ebfu h\u1eadu tr\u00ean ph\u01b0\u01a1ng ti\u1ec7n giao th\u00f4ng.<\/p>\n\n\n\n
B, Khi s\u1eed d\u1ee5ng l\u00e0m g\u01b0\u01a1ng soi \u1edf trong gia \u0111\u00ecnh. L\u00fd do l\u00e0 b\u1edfi v\u00f9ng nh\u00ecn th\u1ea5y c\u1ee7a g\u01b0\u01a1ng c\u1ea7u l\u1ed3i c\u00f3 \u0111\u1ed9 r\u1ed9ng l\u1edbn h\u01a1n so v\u1edbi g\u01b0\u01a1ng ph\u1eb3ng n\u1ebfu c\u00f9ng k\u00edch th\u01b0\u1edbc.<\/p>\n\n\n\n
C, \u0110\u1eb7t g\u01b0\u01a1ng ph\u00e2n k\u1ef3 \u1edf nh\u1eefng \u0111\u01b0\u1eddng cong v\u1edbi kh\u00fac cua h\u1eb9p<\/p>\n\n\n\n
D, S\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o th\u00e0nh nh\u1eefng h\u00ecnh \u1ea3nh kh\u00e1c v\u1edbi v\u1eadt b\u00ean trong nh\u00e0 c\u01b0\u1eddi.<\/p>\n\n\n\n
C\u00e2u 6, T\u1ea1i sao \u1edf nh\u1eefng g\u00f3c c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 c\u00f3 kh\u00fac cua h\u1eb9p, ch\u00fang ta l\u1ea1i ph\u1ea3i l\u1eafm g\u01b0\u01a1ng ph\u00e2n k\u1ef3 m\u00e0 kh\u00f4ng ph\u1ea3i l\u00e0 g\u01b0\u01a1ng ph\u1eb3ng?<\/p>\n\n\n\n
A, V\u00ec g\u01b0\u01a1ng ph\u00e2n k\u1ef3 cho \u1ea3nh r\u00f5 n\u00e9t h\u01a1n<\/p>\n\n\n\n
B, V\u00ec c\u00e1c g\u01b0\u01a1ng ph\u00e2n k\u1ef3 cho \u1ea3nh l\u1edbn h\u01a1n so v\u1edbi v\u1eadt<\/p>\n\n\n\n
C, V\u00ec c\u00e1c g\u01b0\u01a1ng ph\u00e2n k\u1ef3 cho \u1ea3nh th\u1eadt v\u00e0 \u1ea3nh \u0111\u00f3 nh\u1ecf h\u01a1n v\u1eadt<\/p>\n\n\n\n
D, V\u00ec c\u00e1c g\u01b0\u01a1ng ph\u00e2n k\u1ef3 cho \u1ea3nh \u1ea3o v\u00e0 nh\u1ecf h\u01a1n v\u1eadt. V\u00f9ng nh\u00ecn th\u1ea5y t\u1ea1o ra b\u1edfi g\u01b0\u01a1ng l\u1edbn h\u01a1n so v\u1edbi g\u01b0\u01a1ng ph\u1eb3ng c\u00f3 c\u00f9ng m\u1ed9t k\u00edch c\u1ee1.<\/p>\n\n\n\n
\u0110\u00e1p \u00e1n c\u1ee7a c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m g\u01b0\u01a1ng c\u1ea7u l\u1ed3i<\/p>\n\n\n\n
C\u00e2u 1 A<\/p>\n\n\n\n
C\u00e2u 2 B<\/p>\n\n\n\n
C\u00e2u 3 D<\/p>\n\n\n\n
C\u00e2u 4 B<\/p>\n\n\n\n
C\u00e2u 5 B<\/p>\n\n\n\n
C\u00e2u 6 D<\/p>\n\n\n\n
C\u00e1ch d\u00f9ng g\u01b0\u01a1ng h\u1ee3p l\u00fd nh\u1ea5t<\/p>\n\n\n\n
Tr\u00ean \u0111\u00e2y l\u00e0 to\u00e0n b\u1ed9 th\u00f4ng tin ch\u00fang t\u00f4i \u0111\u01b0a \u0111\u1ebfn cho c\u00e1c em v\u1ec1 g\u01b0\u01a1ng c\u1ea7u l\u1ed3i. \u0110\u00e2y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ea5t nhi\u1ec1u trong \u0111\u1eddi s\u1ed1ng. Ngo\u00e0i ra l\u1ea1i hay xu\u1ea5t hi\u1ec7n trong b\u00e0i ki\u1ec3m tra v\u1edbi \u0111\u1ed9 kh\u00f3 t\u0103ng l\u00ean so v\u1edbi g\u01b0\u01a1ng ph\u1eb3ng. Th\u1ebf n\u00ean c\u00e1c em h\u00e3y t\u00ecm hi\u1ec3u k\u1ef9 nh\u1eefng th\u00f4ng tin n\u00e0y v\u00e0 h\u1ecdc h\u1ecfi \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u00ecnh kh\u00f4ng b\u1ecb m\u1ea5t ki\u1ebfn th\u1ee9c nh\u00e9. \u0110\u1eebng qu\u00ean tham kh\u1ea3o th\u00eam b\u00e0i vi\u1ebft v\u1ec1 tr\u00ean website c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 c\u00f3 th\u00eam b\u00e0i h\u1ecdc cho b\u1ea3n th\u00e2n. Ch\u1eafc ch\u1eafn \u1ea3nh c\u1ee7a m\u1ed9t v\u1eadt t\u1ea1o b\u1edfi g\u01b0\u01a1ng ph\u1eb3ng s\u1ebd kh\u00f4ng l\u00e0m b\u1ea1n th\u1ea5t v\u1ecdng.<\/p>\n\n\n\n
Xem th\u00eam c\u00e1c b\u00e0i vi\u1ebft kh\u00e1c c\u00f9ng ch\u1ee7 \u0111\u1ec1<\/p><\/blockquote>\n\n\n\n
\u0110\u1ecbnh lu\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng l\u00e0 g\u00ec b\u1ea1n c\u00f3 bi\u1ebft? Ki\u1ebfn th\u1ee9c l\u00fd 7<\/p>\n\n\n\n
M\u1eb7t ph\u1eb3ng t\u1ecda \u0111\u1ed9 \u2013 To\u00e1n l\u1edbp 7 l\u00e0 chuy\u1ec7n nh\u1ecf<\/p>\n\n\n\n
T\u00ecm hi<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn C\u00f3 t\u1ea5t c\u1ea3 3 lo\u1ea1i g\u01b0\u01a1ng kh\u00e1c nhau th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1ecdi ng\u01b0\u1eddi nh\u1eafc \u0111\u1ebfn. \u0110\u00f3 ch\u00ednh l\u00e0 g\u01b0\u01a1ng ph\u1eb3ng, g\u01b0\u01a1ng c\u1ea7u l\u1ed3i, g\u01b0\u01a1ng c\u1ea7u l\u00f5m. Nhi\u1ec1u ng\u01b0\u1eddi cho r\u1eb1ng ch\u1ec9 c\u00f3 g\u01b0\u01a1ng ph\u1eb3ng m\u1edbi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u trong \u0111\u1eddi s\u1ed1ng. Th\u1ef1c t\u1ebf kh\u00f4ng ph\u1ea3i nh\u01b0 v\u1eady. N\u1ebfu b\u1ea1n […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[4],"tags":[],"class_list":["post-1021","post","type-post","status-publish","format-standard","hentry","category-trung-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=1021"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1021\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1021"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1021"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}