ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿Ð¡»ªÌ½¾¿Í¹Í¸¾µµÄ³ÉÏñ¹æÂÉ£®
£¨1£©¿Î¼ä£¬Ð¡»ªµ½ÊÒÍâÀûÓÃÌ«Ñô¹âÀ´²âÁ¿Í¹Í¸¾µµÄ½¹¾à£¬Ëý½«¸Ã͹͸¾µÕý¶Ô×ÅÌ«Ñô¹â£¬Èçͼ¼×Ëùʾ£®´ËʱֽÉϳÊÏÖÒ»¸ö²¢·Ç×îСµÄ¹â°ßʱ£¬²âµÃÕâ¸ö¹â°ßµ½Í¹Í¸¾µµÄ¾àÀëΪL£®´ËʱÔÙ½«Õâ¸ö͹͸¾µÓëÖ½Ö®¼ä¾àÀëÉÔ΢Ôö´ó£¬Èô¹â°ß±ä´ó£¬Ôò͹͸¾µµÄ½¹¾àfL£¨Ñ¡Ìî¡°£¾¡±¡¢¡°£¼¡±»ò¡°=¡±£©£»µ÷ÕûÒÔºóµÃµ½ÈçͼÒÒËùʾµÄ¹â·ͼ£®Ôò¸Ã͸¾µµÄ½¹¾àΪcm£®
£¨2£©µ±ÖòÑæλÓÚÈçͼ±ûËùʾλÖÃʱ£¬Òƶ¯¹âÆÁ£¬¿ÉÔÚ¹âÆÁÉϵõ½Ò»¸öÇåÎúµÄµ¹Á¢¡¢µÄʵÏñ£»Èô½«À¯ÖòÔ¶Àë͸¾µ2cm£¬´ËʱÏñµÄ´óС±ÈÔÀ´µÄÏñҪЩ£®Èô²»Òƶ¯¹âÆÁ£¬ÔÚ͹͸¾µÇ°Êʵ±µÄλÖ÷ÅÖã¨Ñ¡Ìî¡°½üÊÓÑÛ¾µ¡±»ò¡°Ô¶ÊÓÑÛ¾µ¡±£©£¬Ò²¿ÉÒÔÔÚ¹âÆÁÉÏÔٴγöÏÖÇåÎúµÄÏñ£®
£¨3£©ÊµÑéÖÐÄãÊÇÈçºÎ¹Û²ìÖòÑæ¾Í¹Í¸¾µËù³ÉµÄÐéÏñµÄ£º £®
¡¾´ð°¸¡¿
£¨1£©£¼£»20
£¨2£©·Å´ó£»Ð¡£»½üÊÓÑÛ¾µ
£¨3£©ÔÚ¹âÆÁÒ»²à͸¹ý͹͸¾µ¿´
¡¾½âÎö¡¿½â£º£¨1£©ÓÉÓÚ¹â°ßµ½Í¹Í¸¾µµÄ¾àÀëΪLʱ£¬¼´Ïñ¾àΪLʱ£¬Ö½ÉϳÊÏÖÒ»¸ö²¢·Ç×îСµÄ¹â°ß£¬´ËʱÔÙ½«Õâ¸ö͹͸¾µÓëÖ½Ö®¼ä¾àÀëÉÔ΢Ôö´ó£¬Èô¹â°ß±ä´ó£¬Õâ¸ö¹â°ß¿ÉÄÜÊǽ¹µãÖ®ºóµÄ¹â°ß£¬¹Ê¿ÉÄÜf£¼L£»ÓÉͼ¿ÉÖª£º½¹µãµ½Í¸¾µ¹âÐĵľàÀëµÈÓÚ½¹¾à£¬ËùÒÔf=20cm£»£¨2£©µ±ÖòÑæλÓÚÈçͼ±ûËùʾλÖÃʱ£¬´ËʱÎïÌåÔÚ2f£¾u£¾f£¬³Éµ¹Á¢¡¢·Å´óµÄʵÏñ£®Èô½«À¯ÖòÔ¶Àë͸¾µ2cm£¬Îï¾à±ä´óÏà¾à±äС£¬Ëù³ÉµÄÏñԽС£¬ÔÚ²»Òƶ¯¹âÆÁµÄÇé¿öÏ£¬·ÅÒ»½üÊÓ¾µ£¨°¼Í¸¾µ£©¿ÉÒÔ·¢É¢¹âÏßʹÏñ³ÉÔÚ¹âÆÁÉÏ£¬£¨3£©¿´ÐéÏñµÄ·½·¨£ºÑÛ¾¦Í¸¹ý͹͸¾µÍùÀ¯ÖòÒ»²à¹Û²ì£® ¹Ê´ð°¸Îª£º£¨1£©£¼£» 20£»£¨2£©·Å´ó£» С£» ½üÊÓÑÛ¾µ£»£¨3£©ÔÚ¹âÆÁÒ»²à͸¹ý͹͸¾µ¿´£®
£¨1£©¸ù¾ÝÖ½ÉϳÊÏÖÒ»¸ö²¢·Ç×îСµÄ¹â°ß£¬Õâ¸ö¹â°ß¿ÉÄÜÊǽ¹µãÖ®ºóµÄ£¬Ò²¿ÉÄÜÊǽ¹µã֮ǰµÄ¹â°ß£®¸ù¾ÝͼÅжϳö½¹µã£»£¨2£©±¾ÌâÓ¦ÓÃ͹͸¾µ³ÉÏñµÄ¹æÂÉ£º2f£¾u£¾f£¬³Éµ¹Á¢¡¢·Å´óµÄʵÏñ£¬Í¶Ó°ÒǾÍÊÇÀûÓÃÕâÒ»ÔÀíÖƳɵģ®Í¹Í¸¾µ³ÉʵÏñʱ£¬Îï¾à±ä´óÏà¾à±äС£¬Ëù³ÉµÄÏñԽС£®°¼Í¸¾µ¶Ô¹âÏßÓз¢É¢×÷Ó㻣¨3£©u£¼fʱ£¬Í¹Í¸¾µ³ÉÕýÁ¢¡¢·Å´óµÄÐéÏñ£¬ÐéÏñÓë³ÉÏñÎïÌåλÓÚ͹͸¾µµÄͬ²à£®