ÌâÄ¿ÄÚÈÝ
ÔÚ¡°Ì½¾¿Á¦µÄƽÐÐËıßÐζ¨Ôò¡±µÄʵÑéÖУ¬ÊµÑé×°ÖÃʾÒâͼÈçͼ¼×Ëùʾ£¬ÆäÖÐAOΪÏðƤÉþ£¬OBºÍOCΪϸÉþ£¬AΪ¹Ì¶¨ÏðƤ½îµÄͼ¶¤£¬ OΪÏðƤ½îÓëϸÉþµÄ½áµã£®ÏÈÓÃÁ½¸öµ¯»É²âÁ¦¼Æ½«ÏðƤÉþµÄÒ»¶ËÀÖÁOµã£¬²â³öÁ½¸öÀÁ¦F1ºÍF2£»ÔÙÓÃÒ»¸öµ¯»É²âÁ¦¼Æ½«ÏðƤÉþÀÖÁOµã£¬²â³öÆäÀÁ¦F?£®Í¼ÒÒÊÇijͬѧÔÚ°×Ö½Éϸù¾ÝʵÑé½á¹û×÷³öµÄÁ¦µÄͼʾ£®
¢ÙͼÒÒÖеÄFÓëF?Á½Á¦ÖУ¬·½ÏòÒ»¶¨ÑØAO·½ÏòµÄÊÇ____________
¢Ú²ÉÈ¡ÏÂÁÐÄÄЩ´ëÊ©¿ÉÒÔÆðµ½¼õСʵÑéÎó²îµÄ×÷ÓÃ____________
A£®Á½¸ö·ÖÁ¦F1¡¢F2¼äµÄ¼Ð½ÇÓ¦´óÓÚ90º |
B£®Á½¸ö·ÖÁ¦F1¡¢F2µÄ´óСӦ¾¡Á¿´óЩ |
C£®ÀÏðƤÌõµÄϸÉþÒª³¤Ð©£¬±ê¼ÇͬһϸÉþ·½ÏòµÄÁ½µãҪԶЩ |
D£®µ¯»É²âÁ¦¼Æ¡¢Ï¸Éþ¡¢ÏðƤÌõ¶¼Ó¦Óëľ°åƽÐÐ |
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿