(18·Ö)AºÍBÔÚÒ»¶¨Ìõ¼þÏ¿ɺϳɷ¼Ïã×廯ºÏÎïE£¬GÔÚ±ê×¼×´¿öÏÂÊÇÆøÌ壬´ËÇé¿öϵÄÃܶÈΪ1.25g/L¡£¸÷ÎïÖʼäÏ໥ת»¯¹ØÏµÈçÏÂËùʾ£º
 
Çë»Ø´ðÏÂÁÐÎÊÌ⣺
(1)GÖеĹÙÄÜÍÅÊÇ      (Óû¯Ñ§Ê½±íʾ)£¬DÖеĹÙÄÜÍÅÃû³ÆÊÇ     £¬FµÄ½á¹¹¼òʽΪ    ¡£
(2)Ö¸³ö·´Ó¦ÀàÐÍ£º¢Ù            £¬¢Ú           £¬¢Û               ¡£
(3) д³ö»¯Ñ§·½³Ìʽ£ºA¡úC                                              £»
CÓëÐÂÖÆµÄÇâÑõ»¯Í­Ðü×ÇÒº·´Ó¦£º                                    ¡£
(4)Âú×ãÏÂÁÐÌõ¼þµÄBµÄͬ·ÖÒì¹¹ÌåÓР    ÖÖ¡£
¢ÙÓöFeCl3ÈÜÒºÏÔ×ÏÉ« ¢ÚÄÜ·¢ÉúÒø¾µ·´Ó¦ ¢Û±½»·ÉÏÖ»ÓÐÁ½¸öÈ¡´ú»ù

(ÿ¿Õ2·Ö£¬¹²18·Ö)
£¨1£©
(2)¢ÙÈ¡´ú·´Ó¦ (õ¥»¯·´Ó¦)¢Ú ÏûÈ¥·´Ó¦¢Û¼Ó¾Û·´Ó¦
(3)2CH3CH2OH+O22CH3CHO+H2O
CH3CHO+2Cu(OH)2CH3COOH+Cu2 O¡ý+2H2O
(4) 3

½âÎö

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

¿¼Éú×¢Ò⣺´ËÌâΪ·Ö²æÌ⣬·ÖA¡¢BÁ½Ì⣬¿¼Éú¿ÉÈÎѡһÌâ¡£ÈôÁ½Ìâ¾ù×ö£¬Ò»Âɰ´AÌâ¼Æ·Ö¡£AÌâÊʺÏʹÓöþÆÚ¿Î¸Äн̲ĵĿ¼Éú½â´ð£¬BÌâÊʺÏʹÓÃÒ»ÆÚ¿Î¸Ä½Ì²ÄµÄ¿¼Éú½â´ð¡£

£¨A£©ËÄÖÖ¶ÌÖÜÆÚÔªËØµÄÐÔÖÊ»ò½á¹¹ÐÅÏ¢ÈçÏÂ±í¡£Çë¸ù¾ÝÐÅÏ¢»Ø´ðÏÂÁÐÎÊÌâ¡£

ÔªËØ

A

B

C

D.

ÐÔÖÊ»ò½á¹¹ÐÅÏ¢

ÊÒÎÂϵ¥ÖʳʷÛĩ״¹ÌÌ壬¼ÓÈÈÒ×ÈÛ»¯¡£

µ¥ÖÊÔÚÑõÆøÖÐȼÉÕ£¬·¢³öÃ÷ÁÁµÄÀ¶×ÏÉ«»ðÑæ¡£

µ¥Öʳ£Î¡¢³£Ñ¹ÏÂÊÇÆøÌ壬ÄÜÈÜÓÚË®¡£

Ô­×ÓµÄM²ãÉÏÓÐ1¸öδ³É¶ÔµÄpµç×Ó¡£

µ¥ÖÊÖÊÈí¡¢Òø°×É«¹ÌÌå¡¢µ¼µçÐÔÇ¿¡£

µ¥ÖÊÔÚ¿ÕÆøÖÐȼÉÕ·¢³ö»ÆÉ«µÄ»ðÑæ¡£

Ô­×Ó×îÍâµç×Ó²ãÉÏsµç×ÓÊýµÈÓÚpµç×ÓÊý

µ¥ÖÊΪ¿Õ¼äÍø×´¾§Ì壬¾ßÓкܸߵÄÈÛ¡¢·Ðµã¡£

£¨1£©BÔªËØÔÚÖÜÆÚ±íÖеÄλÖÃÊÇ____________£¬Ð´³öAÔ­×ӵĵç×ÓÅŲ¼Ê½____________¡£

£¨2£©Ð´³öCµ¥ÖÊÓëË®·´Ó¦µÄ»¯Ñ§·½³Ìʽ_____________________¡£AÓëCÐγɵϝºÏÎïÈÜÓÚË®ºó£¬ÈÜÒºµÄpH____________7£¨Ìî¡°´óÓÚ¡±¡°µÈÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©¡£

£¨3£©DÔªËØ×î¸ß¼ÛÑõ»¯Îï¾§ÌåµÄÓ²¶È__________£¨Ìî¡°´ó¡±»ò¡°Ð¡¡±£©£¬ÆäÀíÓÉÊÇ____________________________________________________________________¡£

£¨4£©A¡¢BÁ½ÔªËطǽðÊôÐÔ½ÏÇ¿µÄÊÇ£¨Ð´ÔªËØ·ûºÅ£©______________¡£Ð´³öÄÜÖ¤Ã÷ÕâÒ»½áÂÛµÄÒ»¸öʵÑéÊÂʵ________________________________________________________________¡£

£¨B£©ÔªËØA¨DDÊÇÔªËØÖÜÆÚ±íÖжÌÖÜÆÚµÄËÄÖÖÔªËØ£¬Çë¸ù¾Ý±íÖÐÐÅÏ¢»Ø´ðÏÂÁÐÎÊÌâ¡£

ÔªËØ

A

B

C

D

ÐÔÖÊ»ò½á¹¹ÐÅÏ¢

µ¥ÖÊÖÆ³ÉµÄ¸ßѹµÆ£¬·¢³öµÄ»Æ¹â͸ÎíÁ¦Ç¿¡¢Éä³ÌÔ¶

¹¤ÒµÉÏͨ¹ý·ÖÀëҺ̬¿ÕÆø»ñµÃÆäµ¥ÖÊ¡£Ô­×ÓµÄ×îÍâ²ãδ´ïµ½Îȶ¨½á¹¹¡£

µ¥Öʳ£Î¡¢³£Ñ¹ÏÂÊÇÆøÌ壬ԭ×ÓµÄL²ãÓÐÒ»¸öδ³É¶ÔµÄpµç×Ó

+2¼ÛÑôÀë×ӵĺËÍâµç×ÓÅŲ¼ÓëÄÊÔ­×ÓÏàͬ

£¨1£©ÉϱíÖÐÓëAÊôÓÚͬһÖÜÆÚµÄÔªËØÊÇ___________£¬Ð´³öDÀë×ӵĵç×ÓÅŲ¼Ê½___________¡£

£¨2£©DºÍCÐγɵϝºÏÎïÊôÓÚ_______________¾§Ìå¡£

д³öCµ¥ÖÊÓëË®·´Ó¦µÄ»¯Ñ§·½³Ìʽ_____________________________________________¡£

£¨3£©¶ÔÔªËØBµÄµ¥ÖÊ»ò»¯ºÏÎïÃèÊöÕýÈ·µÄÊÇ_______________¡£

a.BÔªËØµÄ×î¸ßÕý¼ÛΪ+6

b.³£Î¡¢³£Ñ¹Ïµ¥ÖÊÄÑÈÜÓÚË®

c.µ¥ÖÊ·Ö×ÓÖк¬ÓÐ18¸öµç×Ó

d.ÔÚÒ»¶¨Ìõ¼þÏÂþÌõÄÜÓëµ¥ÖÊB·´Ó¦

£¨4£©AºÍDÁ½ÔªËؽðÊôÐÔ½ÏÇ¿µÄÊÇ___________£¨Ð´ÔªËØ·ûºÅ£©¡£Ð´³öÄÜÖ¤Ã÷¸Ã½áÂÛµÄÒ»¸öʵÑéÊÂʵ__________________________________________________________________¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

¿¼Éú×¢Ò⣺´ËÌâΪ·Ö²æÌ⣬·ÖA¡¢BÁ½Ì⣬¿¼Éú¿ÉÈÎѡһÌâ¡£ÈôÁ½Ìâ¾ù×ö£¬Ò»Âɰ´AÌâ¼Æ·Ö¡£AÌâÊʺÏʹÓöþÆÚ¿Î¸Äн̲ĵĿ¼Éú½â´ð£¬BÌâÊʺÏʹÓÃÒ»ÆÚ¿Î¸Ä½Ì²ÄµÄ¿¼Éú½â´ð¡£

£¨A£©ËÄÖÖ¶ÌÖÜÆÚÔªËØµÄÐÔÖÊ»ò½á¹¹ÐÅÏ¢ÈçÏÂ±í¡£Çë¸ù¾ÝÐÅÏ¢»Ø´ðÏÂÁÐÎÊÌâ¡£

ÔªËØ

A

B

C

D.

ÐÔÖÊ»ò½á¹¹ÐÅÏ¢

ÊÒÎÂϵ¥ÖʳʷÛĩ״¹ÌÌ壬¼ÓÈÈÒ×ÈÛ»¯¡£

µ¥ÖÊÔÚÑõÆøÖÐȼÉÕ£¬·¢³öÃ÷ÁÁµÄÀ¶×ÏÉ«»ðÑæ¡£

µ¥Öʳ£Î¡¢³£Ñ¹ÏÂÊÇÆøÌ壬ÄÜÈÜÓÚË®¡£

Ô­×ÓµÄM²ãÉÏÓÐ1¸öδ³É¶ÔµÄpµç×Ó¡£

µ¥ÖÊÖÊÈí¡¢Òø°×É«¹ÌÌå¡¢µ¼µçÐÔÇ¿¡£

µ¥ÖÊÔÚ¿ÕÆøÖÐȼÉÕ·¢³ö»ÆÉ«µÄ»ðÑæ¡£

Ô­×Ó×îÍâµç×Ó²ãÉÏsµç×ÓÊýµÈÓÚpµç×ÓÊý

µ¥ÖÊΪ¿Õ¼äÍø×´¾§Ì壬¾ßÓкܸߵÄÈÛ¡¢·Ðµã¡£

£¨1£©BÔªËØÔÚÖÜÆÚ±íÖеÄλÖÃÊÇ____________£¬Ð´³öAÔ­×ӵĵç×ÓÅŲ¼Ê½____________¡£

£¨2£©Ð´³öCµ¥ÖÊÓëË®·´Ó¦µÄ»¯Ñ§·½³Ìʽ_____________________¡£AÓëCÐγɵϝºÏÎïÈÜÓÚË®ºó£¬ÈÜÒºµÄpH____________7£¨Ìî¡°´óÓÚ¡±¡°µÈÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©¡£

£¨3£©DÔªËØ×î¸ß¼ÛÑõ»¯Îï¾§ÌåµÄÓ²¶È__________£¨Ìî¡°´ó¡±»ò¡°Ð¡¡±£©£¬ÆäÀíÓÉÊÇ____________________________________________________________________¡£

£¨4£©A¡¢BÁ½ÔªËطǽðÊôÐÔ½ÏÇ¿µÄÊÇ£¨Ð´ÔªËØ·ûºÅ£©______________¡£Ð´³öÄÜÖ¤Ã÷ÕâÒ»½áÂÛµÄÒ»¸öʵÑéÊÂʵ________________________________________________________________¡£

£¨B£©ÔªËØA¡ªDÊÇÔªËØÖÜÆÚ±íÖжÌÖÜÆÚµÄËÄÖÖÔªËØ£¬Çë¸ù¾Ý±íÖÐÐÅÏ¢»Ø´ðÏÂÁÐÎÊÌâ¡£

ÔªËØ

A

B

C

D

ÐÔÖÊ»ò½á¹¹ÐÅÏ¢

µ¥ÖÊÖÆ³ÉµÄ¸ßѹµÆ£¬·¢³öµÄ»Æ¹â͸ÎíÁ¦Ç¿¡¢Éä³ÌÔ¶

¹¤ÒµÉÏͨ¹ý·ÖÀëҺ̬¿ÕÆø»ñµÃÆäµ¥ÖÊ¡£Ô­×ÓµÄ×îÍâ²ãδ´ïµ½Îȶ¨½á¹¹¡£

µ¥Öʳ£Î¡¢³£Ñ¹ÏÂÊÇÆøÌ壬ԭ×ÓµÄL²ãÓÐÒ»¸öδ³É¶ÔµÄpµç×Ó

+2¼ÛÑôÀë×ӵĺËÍâµç×ÓÅŲ¼ÓëÄÊÔ­×ÓÏàͬ

£¨1£©ÉϱíÖÐÓëAÊôÓÚͬһÖÜÆÚµÄÔªËØÊÇ___________£¬Ð´³öDÀë×ӵĵç×ÓÅŲ¼Ê½___________¡£

£¨2£©DºÍCÐγɵϝºÏÎïÊôÓÚ_______________¾§Ìå¡£

д³öCµ¥ÖÊÓëË®·´Ó¦µÄ»¯Ñ§·½³Ìʽ_____________________________________________¡£

£¨3£©¶ÔÔªËØBµÄµ¥ÖÊ»ò»¯ºÏÎïÃèÊöÕýÈ·µÄÊÇ_______________¡£

a.BÔªËØµÄ×î¸ßÕý¼ÛΪ+6

b.³£Î¡¢³£Ñ¹Ïµ¥ÖÊÄÑÈÜÓÚË®

c.µ¥ÖÊ·Ö×ÓÖк¬ÓÐ18¸öµç×Ó

d.ÔÚÒ»¶¨Ìõ¼þÏÂþÌõÄÜÓëµ¥ÖÊB·´Ó¦

£¨4£©AºÍDÁ½ÔªËؽðÊôÐÔ½ÏÇ¿µÄÊÇ___________£¨Ð´ÔªËØ·ûºÅ£©¡£Ð´³öÄÜÖ¤Ã÷¸Ã½áÂÛµÄÒ»¸öʵÑéÊÂʵ_____________________________________________________________________¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º2013½ìºÚÁú½­Ê¡Ë«Ñ¼É½ÊеÚÒ»ÖÐѧ¸ßÈýµÚÈý´ÎÔ¿¼»¯Ñ§ÊÔ¾í£¨´ø½âÎö£© ÌâÐÍ£ºÌî¿ÕÌâ

(12·Ö) A¡¢B¡¢W¡¢D¡¢EΪ¶ÌÖÜÆÚÔªËØ£¬ÇÒÔ­×ÓÐòÊýÒÀ´ÎÔö´ó£¬ÖÊ×ÓÊýÖ®ºÍΪ39£¬B¡¢WͬÖÜÆÚ£¬A¡¢DͬÖ÷×壬A¡¢WÄÜÐγÉÁ½ÖÖҺ̬»¯ºÏÎïA2WºÍA2W2£¬EÔªËØµÄÖÜÆÚÐòÊýÓëÖ÷×åÐòÊýÏàµÈ¡£
£¨1£©EÔªËØÔÚÖÜÆÚ±íÖеÄλÖÃΪ                                          ¡£
£¨2£©ÓÉA¡¢B¡¢WÈýÖÖÔªËØ×é³ÉµÄ18µç×Ó΢Á£µÄµç×ÓʽΪ                  ¡£
£¨3£©¾­²â¶¨A2W2Ϊ¶þÔªÈõËᣬÆäËáÐÔ±È̼ËáµÄ»¹ÒªÈõ£¬Çëд³öÆäµÚÒ»²½µçÀëµÄµçÀë·½³Ìʽ                            ¡£³£ÓÃÁòËá´¦ÀíBaO2À´ÖƱ¸A2W2£¬Ð´³ö¸Ã·´Ó¦µÄ»¯Ñ§·½³Ìʽ                                    ¡£
£¨4£©·ÏÓ¡Ë¢µç··´ÉϺ¬ÓÐÍ­£¬ÒÔÍùµÄ»ØÊÕ·½·¨Êǽ«ÆäׯÉÕʹͭת»¯ÎªÑõ»¯Í­£¬ÔÙÓÃÁòËáÈܽ⡣ÏÖ¸ÄÓÃA2W2ºÍÏ¡ÁòËá½þÅÝ·ÏÓ¡Ë¢µç·°å¼È´ïµ½ÉÏÊöÄ¿µÄ£¬ÓÖ±£»¤ÁË»·¾³£¬ÊÔд³ö·´Ó¦µÄÀë×Ó·½³Ìʽ                          ¡£
£¨5£©ÔªËØDµÄµ¥ÖÊÔÚÒ»¶¨Ìõ¼þÏ£¬ÄÜÓëAµ¥ÖÊ»¯ºÏÉú³ÉÒ»ÖÖÂÈ»¯ÎïDA£¬ÈÛµãΪ800¡æDAÄÜÓëË®·´Ó¦·ÅÇâÆø£¬Èô½«1molDAºÍ1molEµ¥ÖÊ»ìºÏ¼ÓÈë×ãÁ¿µÄË®£¬³ä·Ö·´Ó¦ºó³ÉÆøÈ«µÄÌå»ýÊÇ                  £¨±ê×¼×´¿öÏ£©¡£
£¨6£©DµÄij»¯ºÏÎï³Êµ­»ÆÉ«£¬¿ÉÓëÂÈ»¯ÑÇÌúÈÜÒº·´Ó¦¡£Èôµ­»ÆÉ«¹ÌÌåÓëÂÈ»¯ÑÇÌú·´Ó¦µÄÎïÖʵÄÁ¿Ö®±ÈΪ1£º2£¬ÇÒÎÞÆøÌåÉú³É£¬Ôò¸Ã·´Ó¦µÄÀë×Ó·½³ÌʽΪ                                  ¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º2012-2013ѧÄêºÚÁú½­Ê¡Ë«Ñ¼É½ÊиßÈýµÚÈý´ÎÔ¿¼»¯Ñ§ÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÌî¿ÕÌâ

(12·Ö) A¡¢B¡¢W¡¢D¡¢EΪ¶ÌÖÜÆÚÔªËØ£¬ÇÒÔ­×ÓÐòÊýÒÀ´ÎÔö´ó£¬ÖÊ×ÓÊýÖ®ºÍΪ39£¬B¡¢WͬÖÜÆÚ£¬A¡¢DͬÖ÷×壬A¡¢WÄÜÐγÉÁ½ÖÖҺ̬»¯ºÏÎïA2WºÍA2W2£¬EÔªËØµÄÖÜÆÚÐòÊýÓëÖ÷×åÐòÊýÏàµÈ¡£

£¨1£©EÔªËØÔÚÖÜÆÚ±íÖеÄλÖÃΪ                                           ¡£

£¨2£©ÓÉA¡¢B¡¢WÈýÖÖÔªËØ×é³ÉµÄ18µç×Ó΢Á£µÄµç×ÓʽΪ                   ¡£

£¨3£©¾­²â¶¨A2W2Ϊ¶þÔªÈõËᣬÆäËáÐÔ±È̼ËáµÄ»¹ÒªÈõ£¬Çëд³öÆäµÚÒ»²½µçÀëµÄµçÀë·½³Ìʽ                             ¡£³£ÓÃÁòËá´¦ÀíBaO2À´ÖƱ¸A2W2£¬Ð´³ö¸Ã·´Ó¦µÄ»¯Ñ§·½³Ìʽ                                     ¡£

£¨4£©·ÏÓ¡Ë¢µç··´ÉϺ¬ÓÐÍ­£¬ÒÔÍùµÄ»ØÊÕ·½·¨Êǽ«ÆäׯÉÕʹͭת»¯ÎªÑõ»¯Í­£¬ÔÙÓÃÁòËáÈܽ⡣ÏÖ¸ÄÓÃA2W2ºÍÏ¡ÁòËá½þÅÝ·ÏÓ¡Ë¢µç·°å¼È´ïµ½ÉÏÊöÄ¿µÄ£¬ÓÖ±£»¤ÁË»·¾³£¬ÊÔд³ö·´Ó¦µÄÀë×Ó·½³Ìʽ                           ¡£

£¨5£©ÔªËØDµÄµ¥ÖÊÔÚÒ»¶¨Ìõ¼þÏ£¬ÄÜÓëAµ¥ÖÊ»¯ºÏÉú³ÉÒ»ÖÖÂÈ»¯ÎïDA£¬ÈÛµãΪ800¡æDAÄÜÓëË®·´Ó¦·ÅÇâÆø£¬Èô½«1molDAºÍ1molEµ¥ÖÊ»ìºÏ¼ÓÈë×ãÁ¿µÄË®£¬³ä·Ö·´Ó¦ºó³ÉÆøÈ«µÄÌå»ýÊÇ                   £¨±ê×¼×´¿öÏ£©¡£

£¨6£©DµÄij»¯ºÏÎï³Êµ­»ÆÉ«£¬¿ÉÓëÂÈ»¯ÑÇÌúÈÜÒº·´Ó¦¡£Èôµ­»ÆÉ«¹ÌÌåÓëÂÈ»¯ÑÇÌú·´Ó¦µÄÎïÖʵÄÁ¿Ö®±ÈΪ1£º2£¬ÇÒÎÞÆøÌåÉú³É£¬Ôò¸Ã·´Ó¦µÄÀë×Ó·½³ÌʽΪ                                   ¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º2011-2012ѧÄêɽ¶«Ê¡¸ßÈýÉÏѧÆÚµÚ¶þ´Î¶¨Ê±Á·Ï°»¯Ñ§ÊÔ¾í ÌâÐÍ£ºÌî¿ÕÌâ

£¨17·Ö£©£¨1£©Í¨³£Çé¿öÏ£¬Î¢Á£AºÍBΪ·Ö×Ó£¬CºÍEΪÑôÀë×Ó£¬DΪÒõÀë×Ó£¬ËüÃǶ¼º¬ÓÐ10¸öµç×Ó£»BÈÜÓÚAºóËùµÃµÄÎïÖʿɵçÀë³öCºÍD£»A¡¢B¡¢EÈýÖÖ΢Á£·´Ó¦ºó¿ÉµÃCºÍÒ»ÖÖ°×É«³Áµí¡£Çë»Ø´ð£º

¢ÙÓû¯Ñ§·ûºÅ±íʾÏÂÁÐ4ÖÖ΢Á££º

A£º           £»B£º           £»C£º           £»D£º           ¡£

¢ÚB΢Á£ÓëD΢Á£½áºÏÖÊ×Ó£¨H+£©µÄÄÜÁ¦´óСB           D£¨Ìî´óÓÚ¡¢µÈÓÚ¡¢Ð¡ÓÚ£©

£¨2£©A¡¢B¡¢C¡¢D¡¢E·Ö±ð´ú±í5ÖÖ΢Á££¬Ã¿ÖÖ΢Á£Öж¼º¬ÓÐ18¸öµç×Ó¡£ÆäÖÐAºÍC¶¼ÊÇÓɵ¥Ô­×ÓÐγɵÄÒõÀë×Ó£¬B¡¢DºÍE¶¼ÊÇ·ÖÁË£»ÓÖÖªÔÚË®ÈÜÒºÖÐA¸úB·´Ó¦¿ÉÉú³ÉCºÍD£»E¾ßÓÐÇ¿Ñõ»¯ÐÔ¡£Çë»Ø´ð£º

¢ÙÓû¯Ñ§·ûºÅ±íʾÉÏÊö5ÖÖ΢Á££º

A           ¡¢B           ¡¢C           ¡¢D           ¡¢E           £®

¢ÚÔÚË®ÈÜÒºÖÐA¸úB·´Ó¦µÄÀë×Ó·½³ÌʽÊÇ                      ¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸