ÌâÄ¿ÄÚÈÝ
17£®Ä³ÊµÑéС×éҪ̽¾¿Á¦¶ÔÎïÌå×ö¹¦ÓëÎïÌå»ñµÃËٶȵĹØϵ£¬Ñ¡È¡µÄʵÑé×°ÖÃÈçͼ1Ëùʾ£¬ÊµÑéÖ÷Òª²½ÖèÈçÏ£º£¨1£©ÊµÑéʱ£¬ÎªÊ¹Ð¡³µÖ»ÔÚÏðƤ½î×÷ÓÃÏÂÔ˶¯£¬ÔÚδÁ¬½ÓÏðƤ½îʱ½«Ä¾°åµÄ×ó¶ËÓÃСľ¿éµæÆð£¬Ê¹Ä¾°åÇãбºÏÊʵĽǶȣ¬´ò¿ª´òµã¼ÆʱÆ÷£¬ÇáÍÆС³µ£¬µÃµ½µÄÖ½´øÓ¦¸ÃÊÇͼ2ÖеÄÒÒ£¨Ìî¡°¼×¡±»ò¡°ÒÒ¡±£©£®
£¨2£©Ê¹Ð¡³µÔÚÒ»ÌõÏðƤ½îµÄ×÷ÓÃÏÂÓɾ²Ö¹µ¯³ö£¬ÑØľ°å»¬ÐУ¬ÕâʱÏðƤ½î¶ÔС³µ×öµÄ¹¦ÎªW£»
£¨3£©ÔÙÓÃÍêÈ«ÏàͬµÄ2Ìõ¡¢3Ìõ¡ÏðƤ½î×÷ÓÃÓÚС³µ£¬Ã¿´ÎÓɾ²Ö¹ÊÍ·ÅС³µÊ±ÏðƤ½îµÄÉ쳤Á¿£¨»òÐαäÁ¿¡¢³¤¶ÈµÈ£©¶¼Ïàͬ£¨ÌîдÏàӦʵÑéÌõ¼þ£©£¬Ê¹ÏðƤ½î¶ÔС³µ×öµÄ¹¦·Ö±ðΪ2W¡¢3W¡
£¨4£©·ÖÎö´òµã¼ÆʱÆ÷´ò³öµÄÖ½´ø£¬·Ö±ðÇó³öС³µÃ¿´Î»ñµÃµÄ×î´óËÙ¶Èv1¡¢v2¡¢v3¡
£¨5£©×÷³öW-vͼÏó£¬Ôòͼ3ÖзûºÏʵ¼ÊµÄͼÏóÊÇD£®
·ÖÎö £¨1£©ÒªÆ½ºâĦ²ÁÁ¦£¬¹Ê´ËʱÍƶ¯Ð¡³µºó£¬Ð¡³µ×öÔÈËÙÖ±ÏßÔ˶¯£»
£¨3£©ÏðƤÌõÀÁ¦ÊDZäÁ¦£¬²ÉÓñ¶Ôö·¨Ôö¼Ó¹¦£¬¹ÊÏðƤÌõµÄÉ쳤Á¿Ó¦¸ÃÏàͬ£»
£¨5£©¸ù¾Ý¶¯Äܶ¨Àí£¬ºÏÁ¦¹¦ÓëËٶȵÄƽ·½ÊÇÕý±È¹Øϵ£¬¹ÊW-vͼÏóÊÇ¿ª¿ÚСʱµÄÅ×ÎïÏߣ®
½â´ð ½â£º£¨1£©Æ½ºâĦ²ÁÁ¦ºó£¬Ð¡³µÓ¦×öÔÈËÙÔ˶¯£¬ËùÒÔÖ½´øÓ¦¸ÃÊÇͼÒÒ£»
£¨2£©ÏðƤÌõÀÁ¦ÊDZäÁ¦£¬²ÉÓñ¶Ôö·¨Ôö¼Ó¹¦£»
¼´Ê¹Ð¡³µÔÚÒ»ÌõÏðƤ½îµÄ×÷ÓÃÏÂÓɾ²Ö¹µ¯³ö£¬ÕâʱÏðƤ½î¶ÔС³µ×öµÄ¹¦ÎªW£»
ÔÙÓÃÍêÈ«ÏàͬµÄ2Ìõ¡¢3Ìõ¡ÏðƤ½î×÷ÓÃÓÚС³µ£¬Ã¿´ÎÓɾ²Ö¹ÊÍ·ÅС³µÊ±ÏðƤ½îµÄÉ쳤Á¿¶¼Ïàͬ£¬Ê¹ÏðƤ½î¶ÔС³µ×öµÄ¹¦·Ö±ðΪ2W¡¢3W¡
£¨3£©¹¦ÓëËٶȵÄƽ·½Ïà¶ÔÓ¦£¬ËùÒÔͼÏóӦΪD£®
¹Ê´ð°¸Îª£º
£¨1£©ÒÒ£»
£¨3£©É쳤Á¿£¨»òÐαäÁ¿¡¢³¤¶ÈµÈ£©¶¼Ïàͬ£»
£¨5£©D£®
µãÆÀ ±¾ÌâÒÔ̽¾¿×ö¹¦ºÍËٶȹØϵΪʵÑéÃüÌâ±³¾°¿¼²éѧÉú¶ÔʵÑéÊý¾ÝµÄ´¦ÀíºÍ¶Ô½áÂ۵ķÖÎöºÍÆÀ¼ÛÄÜÁ¦£¬±¾Ìâ²ÉÓñ¶Ôö·¨Ôö¼ÓÏðƤÌõµÄ¹¦£¬ÇÉÃî½â¾öÁ˱äÁ¦×ö¹¦µÄ²âÁ¿À§ÄÑ£¬×¢ÒâҪƽºâĦ²ÁÁ¦£®
A£® | ÔØÁ÷×ÓËùÊܾ²µçÁ¦µÄ´óСF=q$\frac{U}{d}$ | |
B£® | µ¼ÌåÉϱíÃæµÄµçÊÆÒ»¶¨´óÓÚϱíÃæµÄµçÊÆ | |
C£® | »ô¶ûϵÊýΪK=$\frac{1}{nq}$£¬ÆäÖÐnΪµ¼Ì嵥볤¶ÈÉϵĵçºÉÊý | |
D£® | ÔØÁ÷×ÓËùÊÜÂåÂ××ÈÁ¦µÄ´óСFÂå=$\frac{BI}{nhd}$£¬ÆäÖÐnΪµ¼Ì嵥λÌå»ýÄڵĵçºÉÊý |
A£® | A¡¢BÁ½ÎïÌåµÄÖÊÁ¿Ö®±ÈΪ2£º1 | |
B£® | F1¡¢F2¶ÔA¡¢BÁ½ÎïÌå×ö¹¦Ö®±ÈΪ1£º2 | |
C£® | È«¹ý³ÌÖÐA¡¢BÁ½ÎïÌåµÄλÒÆÖ®±ÈΪ1£º2 | |
D£® | È«¹ý³ÌÖÐA¡¢B¿Ë·þĦ²ÁÁ¦×ö¹¦Ö®±ÈΪ2£º1 |