4773566
ΪÄúÕÒµ½ÒÔÏÂÏà¹Ø´ð°¸
ÎÒ˯¾õ´ò÷ýÉùÒôÌ«´ó.Ó°Ïì°®ÈË˯¾õ.¸ÃÔõôÖÎÁÆ
½¨ÒéÄãÈ¥¿´¿´Îå¹Ù¿ÆÒ½Éú£¬¿ÉÄÜÄãÓбâÌÒÌå·Ê´ó»òÕßÉà¸úºó×¹,±ÇÏ¢È⣬ÁíÍâ˯¾õ²à˯ҲÄܹ»ÔÚÒ»¶¨³Ì¶ÈÉϼõÇá´ò÷ý¡£ÓеÄʱºòÊÇÐèÒªÊÖÊõÖÎÁƵİ¡¡£´ò÷ýÖ÷ÒªÊÇÑÊºí²¿¼±ÐÔÑ×Ö¢£¬Ã»³¹µ×ÖÎÓú£¬·´¸´·¢×÷ÒýÆðµÄÂýÐÔÑ×Ö¢£¬µ¼ÖµÄ×éÖ¯ÔöÉú£¬·Êºñ£¬ÑÊÇ»ÏÁÕ£¬ÍíÉÏ˯¾õʱ£¬Éà¸ùºóÍË£¬ÈíëñÏÂËú£¬ÐüÓº´¹¹ý³¤£¬µÈÒýÆðµÄ´ò÷ý£®»¹ÓбÇÖиôÆ«Çú£¬Ï±Ǽ׷ʴ󣬱ÇÏ¢È⣬±ÇÑÊÖ×Áö£¬ÔöÖ³Ìå·Ê´óºÍ±âÌÒ...
»´ÄϵãðëÄÄÀïµÄ½ÏºÃ
»´ÄϵãðëÄÄÀïµÄ½ÏºÃ»´ÄϵãðëÄÄÀïµÄ½ÏºÃ²¹³ä˵Ã÷£º»´ÄϵãðëÄÄÀïµÄ½ÏºÃÈç¹ûÊDz»Ó°ÏìÃÀ¹Û¾Í¾¡Á¿²»ÒªÀíËý£¬Ò²²»ÄÜÓÃÊÖÈ¥×¥Ëü£¬ÒÔ·À¸ÐȾºÍ´Ì¼¤Ëü³¤´ó...
¹ØÓÚ²¹¼ÑÀÖµ¼ÖÂÌåÖØ±ä»¯µÄÎÊÌâ - ÓÐÎʱشð
ÐÔ±ð:Å® ÄêÁä:17 ¹ØÓÚ²¹¼ÑÀÖµ¼ÖÂÌåÖØ±ä»¯µÄÎÊÌâÉí¸ß170,ÌåÖØ45kg.±¾À´¿ÉÄÜÊǽÚʳ¼õ·Êµ¼ÖµÄÔ¾²»À´,ÏÖÔÚÒѾ»Ö¸´ÒûʳºÜ¾ÃÁËÔ¾»¹ÊDz»À´,°ëÄê¶àÁË,È¥¿´Á˸¾¿Æ×öÈ˹¤ÖÜÆÚ,³ÔÁËÁ½Ìì¾ÓÈ»...
ÌÇ»¯Ñªºìµ°°×8.9ѪÌÇ6.8ÊÇÌÇÄò²¡Âð¡£
ËÑË÷´ð°¸ ÓÐÎʱشð>È«²¿ÎÊÌâ>ÄÚ¿Æ>ÌÇÄò²¡>ÌÇ»¯Ñªºìµ°°×8.9ѪÌÇ6.8ÊÇÌÇÄò²¡Âð¡£ÌÇ»¯Ñªºìµ°°×8.9ѪÌÇ6.8ÊÇÌÇÄò²¡Âð¡£»áÔ±39379556 Å® 43Ëê ÒÑ»Ø...
È˽̰æÆßÄê¼¶ÉÏ²áµØÀíµç×ÓÊé
µÇ½ÈËÃñ½ÌÓý³ö°æÉç
Ëٶȱ仯Á¿Óз½ÏòÂð
Óа¡ ijʱ¿ÌËٶȵĴóСΪ4m/s,1sºóËٶȵĴóС±äΪ10m/s Ëٶȱ仯Á¿ ÓпÉÄÜÊÇ 6 -14 14 -6 ֻ˵´óС û˵·½Ïò ÄÇÁ½¸ö·½Ïò¶¼ÓпÉÄÜ ÓÐ...
¹ëÅ®³öÉúËÄÌìÁËС±ãʱÓÐѪÔõô»ØÊÂ
¹ëÅ®³öÉúËÄÌìÁËС±ãʱÓÐѪÔõô»ØÊÂÄúºÃ£¬Õâ¸öÇé¿öÊÇÕý³£µÄ²»Óõ£ÐÄ£¬Õâ¸öÊÇÓÉĸÌåÀïÃæ´øÀ´µÄ´ÆÐÔ¼¤ËØÒýÆðµÄС±ãÓÐѪ¡£¹ý¼¸Ìì¾ÍºÃÁË¡£¶à
Ò»ÔÂ×ÔÎÀ¼¸´ÎÕý³£°¡ - ÓÐÎʱشð
Ò»ÔÂ×ÔÎÀ¼¸´ÎÕý³£°¡½¡¿µ×ÉѯÃèÊö£ºÒ»ÔÂ×ÔÎÀ¼¸´ÎÕý³£°¡ÄãºÃ,2-3´Î
1.¼ÆËã¡Ò¡Òxdxdy,ÆäÖÐDÊÇx^2+y^2<2y(x>=0)Χ³ÉµÄ±ÕÇø¼ä...
½â£ºx²+y²£¼2y x²+y²-2y£¼0 x²+(y-1)²£¼1 ¡Ò¡Òxdxdy =¡Ò¡Ò¦Ñcos¦È¦Ñd¦Ñd¦È =¡Ò¡¾0¡ú2¡¿¦Ñ²d¦Ñ¡Ò¡¾0¡ú...
׳×åÈË¿ÚÔÚ30ÍòÒÔÉÏÇÒ׳×å׳×åÈ˿ڱÈÀýÔÚ50%ÒÔÉϵÄÏØÊÐÓм¸...
£¨Ò»£©×³×åÈË¿ÚÕ¼90%ÒÔÉϵÄÏØÊУ¨¹²11¸ö£©¾¸Î÷ÏØ Ãæ»ý3331ƽ·½¹«À×ÜÈË¿Ú57ÍòÈË£¬×³×åÈË¿Ú56.8Íò£¬×³×å±ÈÖØ99.71 ÌìµÈÏØ Ãæ»ý2159ƽ·½¹«À×ÜÈË¿Ú40ÍòÈË£¬×³×åÈË¿Ú...