ÌâÄ¿ÄÚÈÝ
ÊÀ½çÉÏ×îÔç׼ȷ²âÁ¿×ÓÎçÏß³¤¶ÈµÄÊÇÎÒ¹úÌƳ¯ÌìÎÄѧ¼ÒɮһÐС£ËûÔڻƺÓÁ÷ÓòÑØÄÏ¡¢±±Í¬Ò»ÌõÏßÉÏÑ¡ÔñÈô¸É¸öµã£¬·Ö±ð²âÁ¿Ã¿¸öµãµÄ±±¼«ÐǸ߶ȺÍËüÃÇÈÎÁ½µãÖ®¼äµÄµØÃæ¾àÀ룬²¢Óɴ˼ÆËã³öÁË×ÓÎçÏߵij¤¶È¡£¾Ý´Ë»Ø´ðÏÂÌâ¡£
1.ÈôÆäÖÐÁ½µãÏà¾àxǧÃ×£¬±±¼«ÐǸ߶ÈÏà²îy¶È£¬Ôò×ÓÎçÏß³¤¶ÈΪ
- A.1800xy
- B.1800x/y
- C.3600xy
- D.3600x/y
2.¼ÙÈçɮһÐÐÓÐÁ½´Î²âÁ¿ºóËã³öµÄ½á¹ûÓÐÆ«²î£¬ÔòÆäÔÒò¿ÉÄÜÊÇ
- A.µØÇòÁ½¼«ÂԱ⡢³àµÀÂÔ¹Ä
- B.Á½´Î²âÁ¿Ê±µÄ¼¾½Ú²»Í¬
- C.ÕâÖÖ²âÁ¿·½·¨ÊÇ´íÎóµÄ
- D.²âÁ¿Ê±µÄÎó²î
1. B
2. D
ÊÔÌâ·ÖÎö£º
1.±±¼«Ðǵĸ߶ȼ´Êǵ±µØµÄµØÀíγ¶È¡£ÒÑÖªÁ½µØ±±¼«ÐǸ߶ÈÏà²îy¶È£¬¼´ÖªÁ½µØγ¶È²îΪy¶È£¬×ÓÎçÏß¿ç¶ÈΪ1800£¬Óɴ˿ɵóö×ÓÎçÏß³¤¶ÈΪ1800x/y¡£Ñ¡BÕýÈ·¡£
2.µØÇòµÄÐÎ×´²»Ó°ÏìËûµÄ²âÁ¿£¬A´í£»±±¼«ÐÇÏà¶Ô±±¼«µãÊDz»¶¯µÄ£¬ÑöÍû±±¼«ÐǵÄÑö½Ç¾ÍÊǵ±µØµÄµØÀíγ¶È£¬Óë²âÁ¿¼¾½ÚÎ޹أ¬B´í£»×ÓÎçÏßÊÇÏàµÈµÄ£¬¶¼ÊÇ°ëÔ²£¬¿ç¶È1800£¬ÕâÖÖ²âÁ¿ÊÇ¿ÆѧµÄ£¬C´í£»É®Ò»ÐÐÓÐÁ½´Î²âÁ¿ºóËã³öµÄ½á¹ûÓÐÆ«²î£¬Ö»ÄÜÊDzâÁ¿Ê±³öÏÖµÄÎó²î¡£Ñ¡DÕýÈ·¡£
¿¼µã£º±¾ÌâÖ÷Òª¿¼²éµØÇòÏà¹Ø֪ʶ¡£
2. D
ÊÔÌâ·ÖÎö£º
1.±±¼«Ðǵĸ߶ȼ´Êǵ±µØµÄµØÀíγ¶È¡£ÒÑÖªÁ½µØ±±¼«ÐǸ߶ÈÏà²îy¶È£¬¼´ÖªÁ½µØγ¶È²îΪy¶È£¬×ÓÎçÏß¿ç¶ÈΪ1800£¬Óɴ˿ɵóö×ÓÎçÏß³¤¶ÈΪ1800x/y¡£Ñ¡BÕýÈ·¡£
2.µØÇòµÄÐÎ×´²»Ó°ÏìËûµÄ²âÁ¿£¬A´í£»±±¼«ÐÇÏà¶Ô±±¼«µãÊDz»¶¯µÄ£¬ÑöÍû±±¼«ÐǵÄÑö½Ç¾ÍÊǵ±µØµÄµØÀíγ¶È£¬Óë²âÁ¿¼¾½ÚÎ޹أ¬B´í£»×ÓÎçÏßÊÇÏàµÈµÄ£¬¶¼ÊÇ°ëÔ²£¬¿ç¶È1800£¬ÕâÖÖ²âÁ¿ÊÇ¿ÆѧµÄ£¬C´í£»É®Ò»ÐÐÓÐÁ½´Î²âÁ¿ºóËã³öµÄ½á¹ûÓÐÆ«²î£¬Ö»ÄÜÊDzâÁ¿Ê±³öÏÖµÄÎó²î¡£Ñ¡DÕýÈ·¡£
¿¼µã£º±¾ÌâÖ÷Òª¿¼²éµØÇòÏà¹Ø֪ʶ¡£
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
|