°´¼üÅÌÉÏ·½Ïò¼ü ¡û »ò ¡ú ¿É¿ìËÙÉÏÏ·ҳ£¬°´¼üÅÌÉ쵀 Enter ¼ü¿É»Øµ½±¾ÊéĿ¼ҳ£¬°´¼üÅÌÉÏ·½Ïò¼ü ¡ü ¿É»Øµ½±¾Ò³¶¥²¿£¡
¡ª¡ª¡ª¡ªÎ´ÔĶÁÍꣿ¼ÓÈëÊéÇ©ÒѱãÏ´μÌÐøÔĶÁ£¡
¨¡£ÔÚ¿¼²ìµ¥¸ö×ʱ¾µÄ²úÆ·¼Ûֵʱ£¬ÎÒÃǽ²¹ý£¬¹Ì¶¨×ʱ¾ÒòËðºÄ¶øʧȥµÄ¼ÛÖµ£¬»áתÒƵ½ÔÚËðºÄÆÚ¼äÉú²úµÄÉÌÆ·²úÆ·ÖÐÈ¥£¬²»¹ÜÕâ¸ö¹Ì¶¨×ʱ¾ÔÚ´ËÆÚ¼äÊÇ·ñÓÐÈκβ¿·ÖÓÉÓÚÕâÖÖ¼ÛֵתÒƶøµÃµ½ÊµÎï²¹³¥¡£Ïà·´µØ£¬ÔÚÕâÀÔÚ¿¼²ìÉç»á×ܲúÆ·¼°Æä¼Ûֵʱ£¬ÎÒÃDz»µÃ²»Æ²¿ª£¬ÖÁÉÙÊÇÔÝʱƲ¿ª¹Ì¶¨×ʱ¾ÔÚµ±ÄêÒòËðºÄ¶øתÒƵ½Äê²úÆ·ÖÐÈ¥µÄÄDz¿·Ö¼ÛÖµ£¬ÒòΪÕâÖ̶ֹ¨×ʱ¾²»»áÔÚµ±ÄêÖØеõ½ÊµÎï²¹³¥¡£´Ó¶øÔì³ÉÁ½´ó²¿ÀàµÄÉú²úÖðÄêÓв»Í¬µÄ¡°¾ùºâ¡±±ÈÀý¡£ÔÚ±¾ÕµĺóÃæÓÐÒ»½Ú£¬ÎÒÃǽ«×¨ÃÅÂÛÊöÕâÒ»µã¡£
ÎÒÃÇÑо¿¼òµ¥ÔÙÉú²ú£¬ÒªÒÔÏÂÁй«Ê½Îª»ù´¡£¬ÆäÖÐc=²»±ä×ʱ¾£¬v=¿É±ä×ʱ¾£¬m=Ê£Óà¼ÛÖµ£¬²¢ÇÒ¼Ù¶¨¼ÛÖµÔöÖ³ÂÊm/v=100£¥¡£Êý×Ö¿ÉÒÔ±íʾ¼¸°ÙÍòÂí¿Ë£¬¼¸°ÙÍò·¨ÀÉ£¬»ò¼¸°ÙÍò°÷¡£
I¡¢Éú²ú×ÊÁϵÄÉú²ú£º
×ʱ¾¡¡¡¡¡¡¡4000c£«1000v=5000£¬
ÉÌÆ·²úÆ·¡¡¡¡¡4000c£«1000v£«1000m=6000£¬
ÒÔÉú²ú×ÊÁϵÄÐÎʽ´æÔÚ¡£
II¡¢Ïû·Ñ×ÊÁϵÄÉú²ú£º
×ʱ¾¡¡¡¡¡¡¡2000c£«500v=2500£¬
ÉÌÆ·²úÆ·¡¡¡¡¡2000c£«500v£«500m=3000£¬
440
ÒÔÏû·Ñ×ÊÁϵÄÐÎʽ´æÔÚ¡£
¸ÅÀ¨ÆðÀ´Ëµ£¬È«Äê×ÜÉÌÆ·²úÆ·£º
I¡¢4000c£«1000v£«1000m=6000Éú²ú×ÊÁÏ£»
II¡¢2000c£«500v£«500m=3000Ïû·Ñ×ÊÁÏ¡£
×ܼÛÖµ=9000£¬°´ÕÕ¼Ù¶¨£¬ÆäÖв»°üÀ¨¼ÌÐøÒÔʵÎïÐÎʽִÐÐÖ°ÄܵĹ̶¨×ʱ¾¡£
ÏÖÔÚ£¬Èç¹ûÎÒÃÇÑо¿¼òµ¥ÔÙÉú²ú»ù´¡ÉÏ£¨ÕâÀïÈ«²¿Ê£Óà¼ÛÖµ¶¼ÊÇ·ÇÉú²úµØÏû·Ñµô£©µÄ¸÷ÖÖ±ØÒªµÄ½»»»£¬²¢ÇÒÏȲ»¿¼²ì×÷Ϊ½»»»Ã½½éµÄ»õ±ÒÁ÷ͨ£¬ÄÇÄ©£¬ÎÒÃÇÒ»¿ªÊ¼¾Í»áµÃ³öÈý´óÒªµã£º
1¡¢µÚII²¿À๤È˵Ť×Ê500vºÍ×ʱ¾¼ÒµÄÊ£Óà¼ÛÖµ500m£¬±ØÐëÓÃÓÚÏû·Ñ×ÊÁÏ¡£µ«ÊÇ£¬ËüÃǵļÛÖµ´æÔÚÓÚ¼ÛÖµ1000µÄÏû·Ñ×ÊÁÏÖУ¬ÕâÖÖÏû·Ñ×ÊÁÏÕÆÎÕÔÚµÚII²¿ÀàµÄ×ʱ¾¼ÒµÄÊÖÀ²¹³¥Ô¤¸¶µÄ500v£¬²¢´ú±í500m¡£Òò´Ë£¬µÚII²¿ÀàµÄ¹¤×ʺÍÊ£Óà¼ÛÖµ£¬½«ÔÚµÚII²¿ÀàÄÚ²¿Í¬µÚII²¿ÀàµÄ²úÆ·½»»»¡£ÕâÑù£¬¾ÍÓУ¨500v£«500m£©II=1000ÒÔÏû·Ñ×ÊÁÏÐÎʽ´Ó×ܲúÆ·ÖÐÏûʧ¡£
2¡¢µÚI²¿ÀàµÄ1000v£«1000m£¬Í¬Ñù±ØÐëÓÃÓÚÏû·Ñ×ÊÁÏ£¬¼´ÓÃÓÚµÚII²¿ÀàµÄ²úÆ·¡£Òò´Ë£¬ËüÃDZØÐëͬµÚII²¿Àà²úÆ·µÄÆäÓàµÄ¡¢ÊýÁ¿ÓëËûÃÇÏàµÈµÄ²»±ä×ʱ¾²¿·Ö2000c½»»»¡£Îª´Ë£¬µÚII²¿Àà»áµÃµ½Êý¶îÏàµÈµÄÉú²ú×ÊÁÏ£¬µÃµ½ÌåÏÖµÚI²¿ÀàµÄ1000v£«1000mµÄ¼ÛÖµµÄµÚI²¿Àà²úÆ·¡£Òò´Ë£¬¾ÍÓÐ2000IIcºÍ£¨1000v£«1000m£©I´Ó¼ÆËãÖÐÏûʧ¡£
3¡¢»¹Ê£ÏÂ4000Ic¡£ËüÃÇÓÉÉú²ú×ÊÁϹ¹³É£¬Ö»ÄÜÓÃÓÚµÚI²¿À࣬ÒԱ㲹³¥¸Ã²¿ÀàÏû·ÑµôµÄ²»±ä×ʱ¾£¬Òò´Ë£¬ÒªÍ¨¹ýµÚI²¿ÀàµÄ¸÷¸ö×ʱ¾¼ÒÖ®¼äµÄ»¥Ïཻ»»À´½â¾ö£¬¾ÍÏó£¨500v£«500m£©IIҪͨ¹ýµÚII²¿ÀàµÄ¹¤È˺Í×ʱ¾¼ÒÖ®¼äµÄ½»»»£¬»òͨ¹ýµÚII²¿ÀàµÄ¸÷¸ö
441
×ʱ¾¼ÒÖ®¼äµÄ½»»»À´½â¾öÒ»Ñù¡£
ÔÝʱ˵µ½ÕâÀÕâЩֻÊÇΪÁ˸üºÃµØÀí½âÒÔϵÄÐðÊö¡£
III¡¢Á½¸ö²¿ÀàÖ®¼äµÄ½»»»£ºI£¨v£«m£©ºÍIIcµÄ½»»»
ÎÒÃÇ´ÓÁ½¸ö²¿ÀàÖ®¼äµÄ´ó×Ú½»»»¿ªÊ¼¡££¨1000v£«1000m£©I¡ª¡ªÕâЩ¼ÛÖµÒÔÉú²ú×ÊÁϵÄʵÎïÐÎʽ´æÔÚÓÚËüÃǵÄÉú²úÕßÊÖÖСª¡ªÒªºÍ2000IIc£¬¼´ÒÔÏû·Ñ×ÊÁϵÄʵÎïÐÎʽ´æÔڵļÛÖµ½»»»¡£Í¨¹ýÕâÖÖ½»»»£¬µÚII²¿ÀàµÄ×ʱ¾¼Ò°ÑËûÃǵIJ»±ä×ʱ¾=2000´ÓÏû·Ñ×ÊÁÏÐÎʽÔÙת»¯ÎªÏû·Ñ×ÊÁϵÄÉú²ú×ÊÁÏÐÎʽ£¬ÔÚÕâÖÖÐÎʽÖУ¬²»±ä×ʱ¾¿ÉÒÔÖØÐÂ×÷ΪÀͶ¯¹ý³ÌµÄÒòËØ£¬²¢ÇÒ¶ÔÓÚ¼ÛÖµÔöÖ³À´Ëµ×÷Ϊ²»±äµÄ×ʱ¾¼ÛÖµÖ´ÐÐÖ°ÄÜ¡£ÁíÒ»·½Ã棬ͨ¹ýÕâÖÖ½»»»£¬µÚI²¿ÀàµÄÀͶ¯Á¦µÄµÈ¼ÛÎ1000Iv£©ºÍµÚI²¿ÀàµÄ×ʱ¾¼ÒµÄÊ£Óà¼ÛÖµ£¨1000Im£©£¬ÔÚÏû·Ñ×ÊÁÏÖÐʵÏÖ£»¶þÕ߶¼ÓÉÉú²ú×ÊÁϵÄʵÎïÐÎʽת»¯ÎªÒ»ÖÖ¿ÉÒÔ×÷ΪÊÕÈëÀ´Ïû·ÑµÄʵÎïÐÎʽ¡£
µ«ÕâÖÖ»¥Ïཻ»»ÊÇͨ¹ý»õ±ÒÁ÷ͨÍê³ÉµÄ¡£»õ±ÒÁ÷ͨ³ÉΪ½»»»µÄý½é£¬Í¬Ê±Ò²Ê¹ÕâÖÖ½»»»ÄÑÓÚÀí½â£¬È»¶øËüÈ´¾ßÓоö¶¨ÐÔµÄÖØÒªÒâÒ壬ÒòΪ¿É±ä×ʱ¾²¿·Ö±ØÐëÒ»ÔÙ±íÏÖΪ»õ±ÒÐÎʽ£¬¼´±íÏÖΪÓÉ»õ±ÒÐÎʽת»¯ÎªÀͶ¯Á¦µÄ»õ±Ò×ʱ¾¡£ÔÚÕû¸öÉç»á·¶Î§ÄÚͬʱ½øÐоӪµÄÒ»ÇÐÉú²ú²¿ÃÅ£¬²»ÂÛËüÃÇÊôÓÚµÚI²¿À໹ÊǵÚII²¿À࣬¿É±ä×ʱ¾¶¼±ØÐëÒÔ»õ±ÒÐÎʽÀ´Ô¤¸¶¡£×ʱ¾¼Ò¹ºÂòÀͶ¯Á¦£¬ÊÇÔÚÀͶ¯Á¦½ø
442
ÈëÉú²ú¹ý³Ì֮ǰ£¨ÕýÊÇÔÚÕâ¸öÒâÒåÉϳÆ×ʱ¾¼Ò¶Ô¹¤È˽øÐÐÁË¡°Ô¤¸¶¡±£©£¬µ«ÊÇÖ§¸¶ÀͶ¯Á¦µÄ±¨³ê£¬È´ÊÇÔÚÔ¼¶¨µÄÆÚÏÞ£¬ÔÚÀͶ¯Á¦ÒѾÔÚʹÓüÛÖµµÄÉú²úÉÏÏûºÄµôÖ®ºó¡£¾ÍÏó²úÆ·¼ÛÖµµÄÆäÓಿ·ÖÒ»Ñù£¬²úÆ·¼ÛÖµÖнö½ö×÷ΪÔÚÀͶ¯Á¦±¨³êÉÏÖ§³öµÄ»õ±ÒµÄµÈ¼ÛÎïµÄÄDz¿·Ö¼ÛÖµ£¬¼´²úÆ·¼ÛÖµÖдú±í¿É±ä×ʱ¾¼ÛÖµµÄÄDz¿·Ö¼ÛÖµ£¬Ò²ÊÇÊôÓÚ×ʱ¾¼ÒµÄ¡£ÔÚÕⲿ·Ö¼ÛÖµÖУ¬¹¤ÈËÒѾ°ÑËûµÄ¹¤×ʵĵȼÛÎïÌṩ¸ø×ʱ¾¼ÒÁË¡£µ«ÊÇ£¬Ö»ÓÐÉÌÆ·ÔÙת»¯Îª»õ±Ò£¬¼´°ÑÉÌÆ·Âô³öÈ¥£¬×ʱ¾¼ÒµÄ¿É±ä×ʱ¾²ÅÄÜÖØгÉΪËûµÄ»õ±Ò×ʱ¾£¬¿ÉÒÔΪ¹ºÂòÀͶ¯Á¦¶øÖØÐÂÔ¤¸¶¡£
Òò´Ë£¬µÚI²¿ÀàµÄ×ÜÌå×ʱ¾¼ÒÒѾ֧¸¶¸ø¹¤ÈË1000°÷£¨ÎÒ˵¡°°÷¡±£¬Ö»ÊÇΪÁ˱íʾËüÊÇ»õ±ÒÐÎʽµÄ¼ÛÖµ£©=1000v£¬ÒÔ³¥¸¶µÚI²¿Àà²úÆ·Öм´¹¤ÈËËùÉú²úµÄÉú²ú×ÊÁÏÖÐÒѾ×÷Ϊv²¿·Ö´æÔڵļÛÖµ²¿·Ö¡£¹¤ÈËÓÃÕâ1000°÷ÏòµÚII²¿ÀàµÄ×ʱ¾¼Ò¹ºÂòͬµÈ¼ÛÖµµÄÏû·Ñ×ÊÁÏ£¬Õâ¾Í°ÑµÚII²¿ÀàµÄ²»±ä×ʱ¾µÄÒ»°ëת»¯Îª»õ±Ò£»µÚII²¿ÀàµÄ×ʱ¾¼ÒÔÙÓÃÕâ1000°÷ÏòµÚI²¿ÀàµÄ×ʱ¾¼Ò¹ºÂò¼ÛÖµ1000µÄÉú²ú×ÊÁÏ£»Òò´Ë£¬µÚI²¿ÀàµÄ×ʱ¾¼ÒµÄ¿É±ä×ʱ¾¼ÛÖµ=1000v£¬ÓÉÔÀ´ÒÔÉú²ú×ÊÁϵÄʵÎïÐÎʽ´æÔÚµÄÒ»²¿·Ö²úÆ·ÔÙת»¯Îª»õ±Ò£¬ÏÖÔÚ¿ÉÒÔÔÚµÚI²¿ÀàµÄ×ʱ¾¼ÒÊÖÖÐÖØÐÂ×÷Ϊ»õ±Ò×ʱ¾Ö´ÐÐÖ°ÄÜ£¬Õâ¸ö»õ±Ò×ʱ¾»áÔÙת»¯ÎªÀͶ¯Á¦£¬¼´×ª»¯ÎªÉú²ú×ʱ¾ÖÐ×îÖØÒªµÄÒªËØ¡£ÕâÑù£¬ÓÉÓÚµÚI²¿ÀàµÄ×ʱ¾¼ÒµÄÒ»²¿·ÖÉÌÆ·×ʱ¾µÄʵÏÖ£¬ËûÃǵĿɱä×ʱ¾¾ÍÒÔ»õ±ÒÐÎʽÁ÷»Øµ½ËûÃÇÊÖÖС£
ÖÁÓÚµÚI²¿ÀàµÄÉÌÆ·×ʱ¾µÄm²¿·ÖºÍµÚII²¿ÀàµÄ²»±ä×ʱ¾µÄÁíÒ»°ë½»»»Ê±ËùÐèÒªµÄ»õ±Ò£¬Ëü¿ÉÒÔ°´²»Í¬µÄ·½Ê½Ô¤¸¶¡£Êµ¼ÊÉÏ£¬ÕâÖÖÁ÷ͨ°üÀ¨Á½¸ö²¿ÀàµÄ¸÷µ¥¸ö×ʱ¾¼ÒÖ®¼äµÄÎÞÊý¸ö±ðµÄÂòºÍÂô£¬¶øÕâÖÖ»õ±ÒÔÚÈκÎÇé¿ö϶¼±ØÐëÀ´×ÔÕâЩ×ʱ¾¼Ò£¬ÒòΪÓɹ¤ÈËͶÈëÁ÷ͨµÄ»õ±ÒÁ¿£¬ÎÒÃÇÒѾ¼ÆËã¹ýÁË¡£»òÕßÊÇ£¬µÚII²¿ÀàµÄÒ»
443
¸ö×ʱ¾¼Ò¿ÉÒÔÓÃËûµÄºÍÉú²ú×ʱ¾²¢´æµÄ»õ±Ò×ʱ¾£¬ÏòµÚI²¿ÀàµÄ×ʱ¾¼Ò¹ºÂòÉú²ú×ÊÁÏ£»»òÕßÊÇÏà·´£¬µÚI²¿ÀàµÄÒ»¸ö×ʱ¾¼Ò°ÑÓÃÓÚ¸öÈËÖ§³ö¶ø·Ç×ʱ¾Ö§³öµÄ»õ±Ò»ù½ð£¬ÏòµÚII²¿ÀàµÄ×ʱ¾¼Ò¹ºÂòÏû·Ñ×ÊÁÏ¡£ÕýÈçÇ°ÃæµÚһƪºÍµÚ¶þƪÖÐÒѾָ³öµÄ£¬Ç°ÌáÊÇ£ºÔÚÈκÎÇé¿öÏ£¬×ʱ¾¼ÒÊÖÖгýÉú²ú×ʱ¾Í⣬±ØÐëÒªÓÐÒ»¶¨µÄ»õ±Ò´¢±¸¡ª¡ª»òÕß×÷Ϊ×ʱ¾Ô¤¸¶£¬»òÕß×÷ΪÊÕÈ뻨µô¡£ÎÒÃǼٶ¨£¬¡ª¡ª±ÈÀýÈçºÎ£¬¶ÔÎÒÃÇÕâÀïµÄÄ¿µÄÊÇÍêȫûÓйØϵµÄ£¬¡ª¡ª»õ±ÒµÄÒ»°ëÓɵÚII²¿ÀàµÄ×ʱ¾¼ÒÔ¤¸¶À´¹ºÂòÉú²ú×ÊÁÏ£¬ÒÔ²¹³¥ËûÃǵIJ»±ä×ʱ¾£¬ÁíÒ»°ëÔòÓɵÚI²¿ÀàµÄ×ʱ¾¼ÒΪÏû·Ñ¶øÖ§³ö¡£ÕâÑù£¬µÚII²¿ÀàÔ¤¸¶500°÷£¬ÏòµÚI²¿À๺ÂòÉú²ú×ÊÁÏ£¬´Ó¶ø£¨Á¬Í¬ÉÏÊöÀ´×ÔµÚI²¿ÀàµÄ¹¤È˵Ä1000°÷£©ÓÃʵÎï²¹³¥ËüµÄ²»±ä×ʱ¾µÄ3/4£»È»ºóµÚI²¿ÀàÄÃÓɴ˵õ½µÄ500°÷ÏòµÚII²¿À๺ÂòÏû·Ñ×ÊÁÏ£¬´Ó¶øʹµÚI²¿ÀàÓÉm¹¹³ÉµÄÄDz¿·ÖÉÌÆ·×ʱ¾µÄÒ»°ë£¬Íê³Éw¡ªg¡ªwÁ÷ͨ£¬Õâ¾ÍʹµÚI²¿ÀàµÄÕⲿ·Ö²úƷʵÏÖΪÏû·Ñ»ù½ð¡£Í¨¹ýÕâµÚ¶þ¸ö¹ý³Ì£¬500°÷Ò²¾Í×÷Ϊ»õ±Ò×ʱ¾»Øµ½µÚII²¿Àà×ʱ¾¼ÒÊÖÖУ¬¶øͬËûµÄÉú²ú×ʱ¾²¢´æ¡£ÁíÒ»·½Ã棬µÚI²¿ÀàÔ¤ÆÚµ½ËüµÄÉÌÆ·×ʱ¾Öл¹×÷Ϊ¿â´æ²úÆ·µÄm²¿·ÖµÄÒ»°ëÒª³öÊÛ£¬Òò¶ø£¬ÔÚ´ËÒÔÇ°£¬¾ÍÖ§³ö»õ±Ò500°÷£¬À´¹ºÂòµÚII²¿ÀàµÄÏû·Ñ×ÊÁÏ¡£µÚII²¿ÀàÓÖÓÃÕâ500°÷ÏòµÚI²¿À๺ÂòÉú²ú×ÊÁÏ£¬´Ó¶øÓÃʵÎï²¹³¥ÁË×Ô¼ºµÄÈ«²¿²»±ä×ʱ¾£¨1000£«500£«500=2000£©£¬¶øµÚI²¿ÀàÔòʹ×Ô¼ºµÄÈ«²¿Ê£Óà¼ÛÖµÔÚÏû·Ñ×ÊÁÏÖÐʵÏÖ¡£×ܼÆÆðÀ´£¬¼ÛÖµ4000°÷µÄÉÌÆ·µÄ½»»»£¬Í¨¹ý2000°÷µÄ»õ±ÒÁ÷ͨÀ´½øÐС£ÆäËùÒÔÊÇ2000°÷£»Ö»ÊÇÒòΪ°´ÕÕÎÒÃǵÄÐðÊö£¬È«²¿Äê²úÆ·ÊÇ×÷Ϊ¼¸´ó²¿·ÖÒ»´Î½øÐн»»»µÄ¡£ÔÚÕâÀÖØÒªµÄÖ»ÊÇÕâÒ»Çé¿ö£ºµÚII²¿À಻½öÒѾ°ÑËüÒÔÏû·Ñ×ÊÁÏÐÎʽÔÙÉú²úµÄ²»±ä×ʱ¾ÔÙת»¯ÎªÉú²ú×ÊÁϵÄÐÎʽ£¬¶øÇÒ£¬³ý´ËÒÔÍ⣬»¹Ê¹ËüΪ¹ºÂòÉú²ú×ÊÁ϶øÔ¤
444
¸¶µ½Á÷ͨÖÐÈ¥µÄ500°÷Ò²»Øµ½ËüÄÇÀͬÑù£¬µÚI²¿À಻½öÔÙÒ»´ÎÒÔ»õ±ÒÐÎʽµÃµ½ËüÒÔÉú²ú×ÊÁÏÐÎʽÔÙÉú²úµÄ¿É±ä×ʱ¾£¬¼´¿ÉÒÔÔÙÖ±½Óת»¯ÎªÀͶ¯Á¦µÄ»õ±Ò×ʱ¾£¬¶øÇÒ£¬³ý´ËÒÔÍ⣬µÚI²¿ÀàÔ¤ÆÚµ½ËüµÄ×ʱ¾ÖеÄÊ£Óà¼ÛÖµ²¿·Ö»á³öÊÛ¶øÏÈÓÃÀ´¹ºÂòÏû·Ñ×ÊÁϵÄ500°÷Ò²Á÷»Øµ½ËüÄÇÀï¡£µ«ÊÇ£¬Õâ500°÷Á÷»Øµ½ËüÄÇÀ²»ÊÇÓÉÓÚÒѾÓõô£¬¶øÊÇÓÉÓÚËüµÄÉÌÆ·²úÆ·Öге£×ÅÒ»°ëÊ£Óà¼ÛÖµµÄÄÇÒ»²¿·ÖÒÔºó»á³öÊÛ¡£
ÔÚÕâÁ½¸ö³¡ºÏ£