ÌâÄ¿ÄÚÈÝ

ÓÒͼΪijµØÇøµÈ¸ßÏßʾÒâͼ£¬Á½µØÀíÐËȤС×é3ÔÂ21ÈÕÔÚͼʾ  

µØÇøËÞÓª£¬¼×µØµÄС×éÔÚ4¡Ã00(µØ·½Ê±)¿´µ½ÈÕ³ö£¬ÒҵصÄС×é 

ÔÚ5¡Ã00(µØ·½Ê±)¿´µ½ÈÕ³ö¡£¼×¡¢ÒÒÁ½µØµÄÏà¶Ô¸ß¶ÈΪ800Ãס£

»Ø´ð10¡«12Ìâ¡£

10£®´ËÈÕ£¬¼×µØÈÕÕÕʱ¼ä³¤Ô¼                         (¡¡¡¡)

A£®10Сʱ                   B£®12Сʱ

C£®14Сʱ                   D£®16Сʱ

11£®Í¼ÖТ١«¢ÜËĵØÖУ¬´ËÈյط½Ê±6µãÄÜ¿´µ½ÈÕ³öµÄÊÇ                   (¡¡¡¡)

A£®¢Ù     B£®¢Ú     C£®¢Û    D£®¢Ü

12£®¢ÝµØº£°Î¸ß¶È¿ÉÄÜΪ                                                (¡¡¡¡)

A£®80Ã×          B£®250Ã×         C£®390Ã×          D£®820Ã×

½âÎö£ºÖ糤£½(12ʱ£­ÈÕ³öʱ¼ä)¡Á2£½(12£­4)¡Á2£½16Сʱ£¬¼×¡¢ÒÒÏà¶Ô¸ß¶ÈΪ800 m£¬ÓÉͼ¿ÉÖªµÈ¸ß¾àΪ400 m£¬¼×º£°ÎΪ1 600 m£¬ÒÒº£°ÎΪ800 m£¬ÓɵØÐÎͼ¿ÉÖª£¬¢Û´¦º£°ÎΪ0£¬ÇÒÎÞ×èµ²£¬Ó¦Îª6¡Ã00ÈÕ³ö¡£¢ÝµØº£°ÎλÓÚ800¡«1 200 mÖ®¼ä¡£

´ð°¸£º10.D¡¡11.C¡¡12.D

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø