ͼʾΪij̽¾¿»î¶¯Ð¡×éÉè¼ÆµÄ½ÚÄÜÔËÊäϵͳ¡£Ð±Ãæ¹ìµÀÇã½ÇΪ30¡ã£¬ÖÊÁ¿Îª
MµÄľÏäÓë¹ìµÀµÄ¶¯Ä¦²ÁÒòÊýΪ¡£Ä¾ÏäÔÚ¹ìµÀ¶¥¶Ëʱ£¬×Ô¶¯×°»õ×°Öý«ÖÊÁ¿Îª
mµÄ»õÎï×°ÈëľÏ䣬ȻºóľÏäÔØ×Å»õÎïÑعìµÀÎÞ³õËÙ»¬Ï£¬µ±Çᵯ»É±»Ñ¹ËõÖÁ×î¶Ìʱ£¬×Ô¶¯Ð¶»õ×°ÖÃÁ¢¿Ì½«»õÎïжÏ£¬È»ºóľÏäÇ¡ºÃ±»µ¯»Øµ½¹ìµÀ¶¥¶Ë£¬ÔÙÖظ´ÉÏÊö¹ý³Ì¡£ÏÂÁÐÑ¡ÏîÕýÈ·µÄÊÇ£¨ £©
A£®m =" M" |
B£®m = 2M |
C£®Ä¾Ïä²»Ó뵯»É½Ó´¥Ê±£¬ÉÏ»¬µÄ¼ÓËÙ¶ÈСÓÚÏ»¬µÄ¼ÓËÙ¶È |
D£®ÔÚľÏäÓë»õÎï´Ó¶¥¶Ë»¬µ½×îµÍµãµÄ¹ý³ÌÖУ¬¼õÉÙµÄÖØÁ¦ÊÆÄÜÈ«²¿×ª»¯Îªµ¯»ÉµÄµ¯ÐÔÊÆÄÜ |