(2005¡¤ºþ±±Î人)2005Äê6ÔÂ5ÈÕÊǵÚ34¸öÊÀ½ç»·¾³ÈÕ£¬Öйú¶¨µÄÖ÷ÌâÊÇ¡°ÈËÈ˲ÎÓ룬´´½¨ÂÌÉ«¼ÒÔ°¡±£¬ÕâÌìÎ人Êл·±£¾ÖÏòijСÇø¾ÓÃñ·¢·ÅÁË500Ö»»·±£²¼´ü£¬ÒÔ¼õÉÙʹÓÃËÜÁÏ´ü²úÉúµÄ°×É«ÎÛȾ£¬ÎªÁËÁ˽âËÜÁÏ°×É«ÎÛȾµÄÇé¿ö£¬Ä³Ð£Æß(9)°àµÄͬѧ¶ÔÓÐ2500»§¾ÓÃñµÄijСÇøµÄ25¸ö¼ÒÍ¥½øÐÐÁËÒ»Ì춪ÆúËÜÁÏ´üÇé¿öµÄµ÷²é£¬Í³¼Æ½á¹û¼ûÏÂ±í£º

ÒÔ´ËΪÑù±¾£¬¹À¼ÆСÇøÒ»Ì춪ËÜÁÏ´ü×ÜÊý´óÔ¼ÊÇ_______¸ö£®

´ð°¸£º7800
½âÎö£º

¡¡¡¡½â¡¡£®


Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º022

(2005ºþ±±Î人)ÈçͼËùʾƽÃæÖ±½Ç×ø±êϵÖУ¬µãA¡¢B¡¢CµÄ×ø±ê·Ö±ðÊÇA(£­2£¬5)£¬B(£­3£¬£­1)£¬C(1£¬£­1)£¬ÔÚµÚÒ»ÏóÏÞÄÚÕÒÒ»µãD£¬Ê¹ËıßÐÎABCDÊÇƽÐÐËıßÐΣ¬ÄÇôµãDµÄ×ø±êÊÇ(____,____)£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º044

(2005¡¡ºþ±±Î人)ÈçͼËùʾ£¬ËíµÀµÄ½ØÃæÓÉÅ×ÎïÏßAEDºÍ¾ØÐÎABCD¹¹³É£¬¾ØÐεij¤BCΪ8m£¬¿íABΪ2m£¬ÒÔBCËùÔÚµÄÖ±ÏßΪxÖᣬÏ߶ÎBCµÄÖд¹ÏßΪyÖᣬ½¨Á¢Æ½ÃæÖ±½Ç×ø±êϵ£®yÖáÊÇÅ×ÎïÏߵĶԳÆÖᣬ¶¥µãEµ½×ø±êÔ­µãOµÄ¾àÀëΪ6m£®

(1)ÇóÅ×ÎïÏߵĽâÎöʽ£»

(2)Èç¹û¸ÃËíµÀÄÚÉèË«ÐеÀ£¬ÏÖÓÐÒ»Á¾»õÔË¿¨³µ¸ß4.2m£¬¿í2.4m£¬ÕâÁ¾»õÔË¿¨³µÄÜ·ñͨ¹ý¸ÃËíµÀ£¿¹ý¼ÆËã˵Ã÷ÄãµÄ½áÂÛ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º022

(2005¡¡ºþ±±Î人)ÈçͼËùʾ£¬BCÊÇ°ëÔ²OµÄÖ±¾¶£¬µãDÊÇ°ëÔ²ÉÏÒ»µã£¬¹ýµãD×÷¡ÑOÇÐÏßÇÒD£¬BA¡ÍDAÓÚµãA£¬BA½»°ëÔ²ÓÚµãE£®ÒÑÖªBC=10£¬AD=4£®ÄÇôֱÏßCEÓëÒÔµãOΪԲÐÄ£¬Îª°ë¾¶µÄλÖùØϵÊÇ________£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º044

(2005¡¤ºþ±±Î人)2005Äê5ÔÂ17ÈÕ£¬¡¶³¤½­ÈÕ±¨¡·¿¯µÇÁË¡¶2004ÄêÎ人Êл·¾³×´¿ö¹«±¨¡·£®ÆäÖУ¬¶ÔÎ人ÊÐ14ÌõÖ÷Òª½»Í¨¸ÉÏß2004ÄêµÄɤÉùÇé¿ö½øÐÐÁËͳ¼Æ£¬½á¹ûÈçͼËùʾ£º

(1)Õâ14Ìõ½»Í¨¸ÉÏßµÄɤÉùµÄÖÐλÊýÊǶàÉÙ£¿

(2)Èç¹û¹æ¶¨½»Í¨¸ÉÏßµÄɤÉù²»³¬¹ý70dBΪ´ï±ê£¬Õâ14Ìõ½»Í¨¸ÉÏßµÄɤÉù´ï±êÂÊԼΪ¶àÉÙ£¿(¾«È·µ½0.1%)

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸