ÌâÄ¿ÄÚÈÝ
ijУ¾ÅÄ꼶ÓÐ200ÃûѧÉú²Î¼ÓÁËÈ«¹ú³õÖÐÊýѧÁªºÏ¾ºÈüµÄ³õÈü£¬ÎªÁËÁ˽Ȿ´Î³õÈüµÄ³É¼¨Çé¿ö£¬´ÓÖгéÈ¡ÁË50ÃûѧÉú£¬½«ËûÃǵijõÈü³É¼¨£¨µÃ·ÖΪÕûÊý£¬Âú·ÖΪ100·Ö£©·Ö³ÉÎå×飺µÚÒ»×é49.5¡«59.5£»µÚ¶þ×é59.5¡«69.5£»µÚÈý×é69.5¡«79.5£»µÚËÄ×é79.5¡«89.5£»µÚÎå×é89.5¡«100.5£®Í³¼ÆºóµÃµ½Í¼ËùʾµÄƵÊý·Ö²¼Ö±·½Í¼£¨²¿·Ö£©£®¹Û²ìͼÐεÄÐÅÏ¢£¬»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©µÚËÄ×éµÄƵÊýΪ
£¨2£©Èô½«µÃ·Öת»¯ÎªµÈ¼¶£¬¹æ¶¨£ºµÃ·ÖµÍÓÚ59.5·ÖÆÀΪ¡°D¡±£¬59.5¡«69.5·ÖÆÀΪ¡°C¡±£¬69.5¡«89.5·ÖÆÀΪ¡°B¡±£¬89.5¡«100.5·ÖÆÀΪ¡°A¡±£®ÄÇôÕâ200Ãû²Î¼Ó³õÈüµÄѧÉúÖУ¬²ÎÈü³É¼¨ÆÀΪ¡°D¡±µÄѧÉúÔ¼ÓÐ
£¨3£©Èô½«³éÈ¡³öÀ´µÄ50ÃûѧÉúÖгɼ¨ÂäÔÚµÚËÄ¡¢µÚÎå×éµÄѧÉú×é³ÉÒ»¸öÅàѵС×飬ÔÙ´ÓÕâ¸öÅàѵС×éÖÐËæ»úÌôÑ¡2ÃûѧÉú²Î¼Ó¾öÈü£®ÓÃÁÐ±í·¨»ò»Ê÷״ͼ·¨Çó£ºÌôÑ¡µÄ2ÃûѧÉúµÄ³õÈü³É¼¨Ç¡ºÃ¶¼ÔÚ90·ÖÒÔÉϵĸÅÂÊ£®
·ÖÎö£º£¨1£©ÓÃÑù±¾ÈÝÁ¿50·Ö±ð¼õÈ¥ÆäËü¸÷×éµÄÈËÊý£¬¼ÈµÃµÚËÄ×éµÄƵÊý£»
£¨2£©¸ù¾ÝƵÊý·Ö²¼Ö±·½Í¼¿ÉÖª£¬50¸öÈËÖвÎÈü³É¼¨ÆÀΪ¡°D¡±µÄѧÉúÓÐ16£¬Çó³öËùÕ¼µÄ°Ù·Ö±È£¬ÔÙ³ËÒÔ200¼´¿É£»
£¨3£©ÓÉÌâÒâ¿ÉÖªµÚËÄ×éµÄƵÊýÊÇ2£¬µÚÎå×éµÄƵÊýÒ²ÊÇ2£¬ÉèµÚËÄ×éµÄ2ÃûѧÉú·Ö±ðΪA1¡¢A2µÚÎå×éµÄ2ÃûѧÉúΪB1¡¢B2£¬»Ê÷״ͼ£¬Í¨¹ýͼȷ¶¨Ç¡ºÃ¶¼ÊÇÔÚ90·ÖÒÔÉϵĸÅÂÊ£®
£¨2£©¸ù¾ÝƵÊý·Ö²¼Ö±·½Í¼¿ÉÖª£¬50¸öÈËÖвÎÈü³É¼¨ÆÀΪ¡°D¡±µÄѧÉúÓÐ16£¬Çó³öËùÕ¼µÄ°Ù·Ö±È£¬ÔÙ³ËÒÔ200¼´¿É£»
£¨3£©ÓÉÌâÒâ¿ÉÖªµÚËÄ×éµÄƵÊýÊÇ2£¬µÚÎå×éµÄƵÊýÒ²ÊÇ2£¬ÉèµÚËÄ×éµÄ2ÃûѧÉú·Ö±ðΪA1¡¢A2µÚÎå×éµÄ2ÃûѧÉúΪB1¡¢B2£¬»Ê÷״ͼ£¬Í¨¹ýͼȷ¶¨Ç¡ºÃ¶¼ÊÇÔÚ90·ÖÒÔÉϵĸÅÂÊ£®
½â´ð£º½â£º£¨1£©µÚËÄ×éµÄƵÊýΪ£º50-16-20-10-2=2£»
£¨2£©²ÎÈü³É¼¨ÆÀΪ¡°D¡±µÄѧÉúÔ¼ÓУº200¡Á
=64£¨ÈË£©£»
£¨3£©ÒÀÌâµÃµÚËÄ×éµÄƵÊýÊÇ2£¬µÚÎå×éµÄƵÊýÒ²ÊÇ2£¬ÉèµÚËÄ×éµÄ2ÃûѧÉú·Ö±ðΪA1¡¢A2µÚÎå×éµÄ2ÃûѧÉúΪB1¡¢B2£¬»Ê÷״ͼÈçÏ£º
£¨5
ÓÉÉÏͼ¿ÉÖª¹²ÓÐ12ÖÖ½á¹û£¬ÆäÖÐÁ½¸ö¶¼ÊÇ90·ÖÒÔÉϵÄÓÐÁ½ÖÖ½á¹û£¬ËùÒÔÇ¡ºÃ¶¼ÊÇÔÚ90·ÖÒÔÉϵĸÅÂÊΪ
£®
£¨2£©²ÎÈü³É¼¨ÆÀΪ¡°D¡±µÄѧÉúÔ¼ÓУº200¡Á
16 |
50 |
£¨3£©ÒÀÌâµÃµÚËÄ×éµÄƵÊýÊÇ2£¬µÚÎå×éµÄƵÊýÒ²ÊÇ2£¬ÉèµÚËÄ×éµÄ2ÃûѧÉú·Ö±ðΪA1¡¢A2µÚÎå×éµÄ2ÃûѧÉúΪB1¡¢B2£¬»Ê÷״ͼÈçÏ£º
£¨5
ÓÉÉÏͼ¿ÉÖª¹²ÓÐ12ÖÖ½á¹û£¬ÆäÖÐÁ½¸ö¶¼ÊÇ90·ÖÒÔÉϵÄÓÐÁ½ÖÖ½á¹û£¬ËùÒÔÇ¡ºÃ¶¼ÊÇÔÚ90·ÖÒÔÉϵĸÅÂÊΪ
1 |
6 |
µãÆÀ£º±¾Ì⿼²é¶ÁƵÊý·Ö²¼Ö±·½Í¼µÄÄÜÁ¦ºÍÀûÓÃͳ¼Æͼ»ñÈ¡ÐÅÏ¢µÄÄÜÁ¦£®ÀûÓÃͳ¼Æͼ»ñÈ¡ÐÅϢʱ£¬±ØÐëÈÏÕæ¹Û²ì¡¢·ÖÎö¡¢Ñо¿Í³¼Æͼ£¬²ÅÄÜ×÷³öÕýÈ·µÄÅжϺͽâ¾öÎÊÌ⣮Óõ½µÄ֪ʶµãΪ£º¸÷С×éƵÊýÖ®ºÍµÈÓÚÑù±¾×ÜÊý£»¸ÅÂÊ=ËùÇóÇé¿öÊýÓë×ÜÇé¿öÊýÖ®±È£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿