ÌâÄ¿ÄÚÈÝ
7£®| A£® | b¡¢dÁ½µãµÄµç³¡Ç¿¶ÈÏàͬ | |
| B£® | aµãµÄµçÊÆ¸ßÓÚfµãµÄµçÊÆ | |
| C£® | µãµçºÉ+qÔÚÇòÃæÉÏÈÎÒâÁ½µãÖ®¼äÒÆ¶¯Ê±£¬µç³¡Á¦Ò»¶¨²»×ö¹¦ | |
| D£® | ½«µãµçºÉ+qÔÚÇòÃæÉÏÈÎÒâÁ½µãÖ®¼äÒÆ¶¯£¬´ÓÇòÃæÉÏaµãÒÆ¶¯µ½cµãµÄµçÊÆÄܱ仯Á¿×î´ó |
·ÖÎö ±¾ÌâÖе糡¿ÉÒÔ¿´×÷ÊÇÓÉÔÈÇ¿µç³¡ºÍµãµçºÉµÄµç³¡µþ¼Ó¶ø³É£¬ÔÚÅжϵ糡Á¦×ö¹¦¡¢µç³¡Ç¿¶ÈʱÔÙ½øÐкϳɼ´¿É
½â´ð ½â£ºA¡¢ÔÈÇ¿µç³¡µÄµç³¡Ç¿¶ÈÏòÓÒÇÒ¸÷µãÏàͬ£¬Í¼Öи÷µãÓɵãµçºÉµ¥¶À´æÔÚʱ²úÉúµÄµç³¡Ç¿¶È´óСÏàµÈ£¬·½Ïò²»Í¬£¬ºÍ³¡Ç¿ÎªÁ½¸ö³¡Ç¿µÄʸÁ¿ºÍ£¬¸ù¾ÝƽÐÐËıßÐζ¨Ôò¿ÉÖª£¬b¡¢dÁ½µãµÄµç³¡Ç¿¶È´óСÏàͬ£¬·½Ïò²»Í¬£¬¹ÊA´íÎó£»
B¡¢½²Ò»¸öÊÔ̽ÕýµçºÉÓÉaµãÒÆ¶¯µ½fµã£¬µãµçºÉµç³¡Á¦²»×ö¹¦£¬ÔÈÇ¿µç³¡µÄµç³¡Á¦×öÕý¹¦£¬¹ÊºÏÁ¦×öÕý¹¦£¬µçÊÆÄܼõС£¬µçÊÆ½µµÍ£¬¹ÊBÕýÈ·£»
C¡¢½«µãµçºÉ+qÔÚÇòÃæÉÏÈÎÒâÁ½µãÖ®¼äÒÆ¶¯£¬µãµçºÉµç³¡Á¦²»×ö¹¦£¬´ÓaµãÒÆ¶¯µ½cµã£¬ÔÈÇ¿µç³¡µÄµç³¡Á¦×ö¹¦×î´ó£¬¹ÊºÏÁ¦×ö¹¦×î´ó£¬µçÊÆÄܱ仯Á¿×î´ó£¬¹ÊC´íÎóDÕýÈ·£»
¹ÊÑ¡£ºBD
µãÆÀ ±¾Ì⻹ÊÇÒª½«µç³¡¿´×÷ÊÇÓÉÔÈÇ¿µç³¡ºÍµãµçºÉµÄµç³¡×éºÏ¶ø³É£¬ÔÙ·ÖÎöµç³¡Á¦×ö¹¦¡¢µç³¡Ç¿¶ÈºÍµçÊÆÄÜʱ¸üÊÇÈç´Ë
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
2£®
ÈçͼËùʾ£¬Á½¸ù×ã¹»³¤µÄˮƽƽÐнðÊôµ¼¹ìÏà¾àΪL£¬¹Ì¶¨ÔÚˮƽ×ÀÃæÉÏ£¬µ¼¹ìÓÒ¶ËÁ¬½Óµç¶¯ÊÆÎªE£¨ÄÚ×è²»¼Æ£©µÄµç³Ø¼°µç×èR£®³¤¶ÈÂÔ´óÓÚLµÄ½ðÊô°ô´¹Ö±ÓÚµ¼¹ì·ÅÖã¬ÈôÔÚÕû¸ö¿Õ¼ä¼ÓÉÏ·½ÏòÊúÖ±ÏòϵÄÔÈÇ¿´Å³¡£¬±ÕºÏ¿ª¹Øºó½ðÊô°ôÓɾ²Ö¹¿ªÊ¼»¬¶¯Ò»¶Îʱ¼äºó¿É´ïµ½ÔÈËÙ״̬£¬ÇÒ²»Í¬´óСµÄ´Å¸ÐӦǿ¶È£¬´ïµ½ÔÈËÙ״̬µÄËٶȲ»Í¬£®ÉèÔ˶¯Ê±½ðÊô°ôÓëµ¼¹ì¼äµÄĦ²ÁÁ¦ºãΪf£®²»¿¼ÂǽðÊô°ôÖеçÁ÷µÄ´Å³¡¼°½ðÊô°ôµÄµç×裮ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
| A£® | µ±´Å¸ÐӦǿ¶ÈB=$\frac{2fR}{LE}$ʱ£¬½ðÊô°ô´ïµ½ÔÈËÙ״̬µÄËٶȾßÓÐ×î´óÖµ | |
| B£® | ½ðÊô°ô´ïµ½ÔÈËÙ״̬µÄËٶȾßÓÐ×î´óֵʱ£¬ÆäÁ½¶ËµçѹΪ$\frac{E}{3}$ | |
| C£® | ½ðÊô°ô´ïµ½ÔÈËÙ״̬µÄËٶȾßÓÐ×î´óֵʱ£¬Í¨¹ýµÄµçÁ÷Ϊ$\frac{E}{2R}$ | |
| D£® | ½ðÊô°ô´ïµ½ÔÈËÙ״̬µÄËٶȾßÓÐ×î´óֵʱ£¬Æä¿Ë·þĦ²ÁÁ¦µÄ¹¦ÂÊΪ$\frac{{E}^{2}}{4R}$ |
12£®ÒÔÏÂ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
| A£® | θ¾µÀûÓÃÁ˹âµÄÈ«·´ÉäÏÖÏó | |
| B£® | Ö×Áö·ÅÁÆÒÇÀûÓÃÁ˦ÃÉäÏߵĵçÀë×÷Óà | |
| C£® | ºìÍâÏßÖÎÁÆÒÇÀûÓÃÁ˺ìÍâÏߵĻ¯Ñ§×÷Óà | |
| D£® | X¹â»úÀûÓÃÁËÂ×ÇÙÉäÏߵĴ©Í¸×÷Óà | |
| E£® | ÎÞÉ«·ÊÔíÒº´µ³öµÄ·ÊÔíÅݳʲÊÉ«ÊÇÓÉÓÚ¹âÕÕʱ·¢ÉúÁ˱¡Ä¤¸ÉÉæ |
16£®
Èçͼ£¬±ùË®£¨ÉèζȲ»±ä£©ÖÐÆøÅÝÉÏÉý¹ý³ÌÌå»ýÖð½¥Ôö´ó£¬ÉèÅÝÄÚΪÖÊÁ¿²»±äµÄÀíÏëÆøÌ壬ÔòÉÏÉý¹ý³ÌÅÝÄÚÆøÌ壨¡¡¡¡£©
| A£® | ѹǿÔö´ó | B£® | ѹǿ¼õС | C£® | ÔÚ±ùË®ÖÐÎüÈÈ | D£® | ÔÚ±ùË®ÖзÅÈÈ |
17£®
Èçͼ£¬ÔÚµãµçºÉQÐγɵĵ糡ÖÐÓÐA¡¢B¡¢CÈýµã£¬BCÊÇÒÔQΪԲÐĵÄÒ»¶ÎÔ²»¡£®ABÁ½µãµÄµçÊÆ²îΪ10v£¬ÕýµãµçºÉqÑØA¡úB¡úCÒÆ¶¯£¬Ôò£¨¡¡¡¡£©
| A£® | µãµçºÉQ´øÕýµç | |
| B£® | ÑØBCÔ˶¯Ê±µç³¡Á¦×öÕý¹¦ | |
| C£® | BµãµÄµç³¡Ç¿¶ÈÓëCµãµÄ´óСÏàµÈ | |
| D£® | qÔÚAµãʱ¾ßÓеĵçÊÆÄܱÈÔÚCµãʱµÄ´ó |