ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿Ð¡´ÏͬѧÔÚѧϰÁË°¢»ùÃ×µÂÔÀíʱÏëµ½¡°ÎïÌåÊܵ½¸¡Á¦´óС¿ÉÄÜ»¹¸úÎïÌåµÄÃܶÈÓйØ?¡±¡¢¡°Ã»ÓÐÌìƽºÍÁ¿Í²£¬Ö»Óõ¯»É²âÁ¦¼ÆºÍˮҲÄܲâÌú¿éµÈµÄÃܶȡ±£¬ËûÑ¡È¡ÁËÁ½¿éÌå»ýºÍÐÎ×´¶¼ÏàͬµÄʵÐÄÍ¿éºÍÌú¿é£¨ÒÑ֪͵ÄÃܶȴóÓÚÌúµÄÃܶȣ©£¬½øÐÐÁËÈçͼµÄʵÑé¡£
£¨1£©²½ÖèCÖеÄÌú¿éÔÚË®ÖÐËùÊܵ½µÄ¸¡Á¦Îª N£®
£¨2£©ÑéÖ¤ÎïÌåËùÊܵĸ¡Á¦´óСÊÇ·ñÓëÎïÌåµÄÃܶÈÓйأ¿Ð¡´ÏÓ¦¸ÃѡȡͼÖеIJ½Öè £¨Ìî×Öĸ·ûºÅ£©½øÐжԱȣ®¸ù¾ÝËûËùÑ¡ÔñµÄ¼¸¸öͼÖе¯»É²âÁ¦¼ÆµÄʾÊý¿ÉÒÔÖªµÀÍ¿éÊܵ½µÄ¸¡Á¦ £¨Ñ¡Ìî¡°´óÓÚ¡±¡¢¡°µÈÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©Ìú¿éÊܵ½µÄ¸¡Á¦£®Óɴ˵óöÎïÌåËùÊܵĸ¡Á¦»ðСÓëÎïÌåµÄÃÜ¶È £¨Ñ¡Ìî¡°Óйء±»ò¡°Î޹ء±£©
£¨3£©¸ÃʵÑ黹¿ÉÒÔÑо¿ÆäËûµÄ¸¡Á¦ÎÊÌ⣬°´ÕÕͼÖеÄA¡¢C¡¢D²½ÖèʵÑé¡£¿ÉÒԵóöµÄ½áÂÛÊÇ£ºÒºÌåÃܶÈÒ»¶¨Ê±£¬ ¡£
£¨4£©ÀûÓñ¾ÊµÑéµÄÊý¾Ý£¬²âµÃÌú¿éµÄÃܶȴóСÊÇ kg/m3¡£
¡¾´ð°¸¡¿£¨1£©0.3£¨2£© ABCD µÈÓÚ Î޹أ¨3£©ÎïÌåÅÅ¿ªÒºÌåµÄÌå»ýÔ½´ó£¬ËùÊܵĸ¡Á¦Ô½´ó£¨4£©800
¡¾½âÎö¡¿ÊÔÌâ·ÖÎö£º(1)ÓÉͼʾ¿ÉÖª£¬²½ÖèCÖеÄÌú¿éÔÚË®ÖÐËùÊܵ½µÄ¸¡Á¦Îª0.3N£»(2)ÑéÖ¤ÎïÌåËùÊܵĸ¡Á¦´óСÓëÎïÌåµÄÃܶȹØϵʱӦ¸ÃѡȡͼÖеIJ½ÖèABCD½øÐжԱȣ»ÓÉͼʾ¿ÉÒÔÖªµÀÍ¿éÊܵ½µÄ¸¡Á¦µÈÓÚÌú¿éÊܵ½µÄ¸¡Á¦£¬ËùÒÔ¿ÉÖªÎïÌåËùÊܵĸ¡Á¦»ðСÓëÎïÌåµÄÃܶÈÎ޹أ»(3)µ±ÒºÌåÃܶÈÒ»¶¨Ê±£¬ÎïÌåÅÅ¿ªÒºÌåµÄÌå»ýÔ½´ó£¬ËùÊܵĸ¡Á¦Ô½´ó£»(4)ÓÉÌâÄ¿ÖеÄÊý¾Ý¿É²âµÃÌú¿éµÄÃܶȴóСÊÇ800kg/m3¡£