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举一反三
- <img src="http://img0.ph.126.net/q6tqn77YyTg_j7CabeHYJw==/3109735542717391842.jpg" />? <img src="http://img1.ph.126.net/QO3FWMGgxAVtN31l0ulKFw==/6619487709235793443.jpg" />|<img src="http://img2.ph.126.net/-x9WCwFJKaqmfOJLJjH0_Q==/6630623563001319953.jpg" />|<img src="http://img1.ph.126.net/5eiGUQZYA2gEX9q4m57n4Q==/6608642126539334311.jpg" />|<img src="http://img1.ph.126.net/YixVkAU6iexb7xitW-q8Lg==/6630125484233816848.jpg" />
- <img src="http://img1.ph.126.net/xRWXQUfZJwmSXkQiZ0l2HQ==/3826089358528721080.jpg" />? <img src="http://img2.ph.126.net/QX-jBzzFTrwpTjQkcBtfcg==/2449958197307439176.jpg" />|<img src="http://img0.ph.126.net/3XApesgU0Iga8L5Tkm0YXg==/6630324495838409649.jpg" />|<img src="http://img2.ph.126.net/sPsiWYSStdIbrCUcsMBK9A==/3114802092298176869.jpg" />|<img src="http://img1.ph.126.net/y-FdOVmaocQvOIOXtXTxEw==/662592095194801258.jpg" />
- <img src="http://img0.ph.126.net/qTvKCnpBxCeCijb88CKSNQ==/6632485036189822509.png" />? <img src="http://img1.ph.126.net/Y7wKEaGGeNBuSwc9GbYuyg==/6608251799912132017.png" />|<img src="http://img1.ph.126.net/7acB1UIp2O_CZmSqpGA0yQ==/6597158827100659273.png" />|<img src="http://img1.ph.126.net/-Fgn4AoNQzVftUnH_lPeHg==/6630151872514107031.png" />|<img src="http://img1.ph.126.net/knoGV4UX9L4YUquOIP-Jxw==/1409626683467679913.png" />
- 心形线 <img src="http://img1.ph.126.net/51iXNdllu1oPmo73M33A-g==/3828059683365171853.png" /> ， 其中 <img src="http://img1.ph.126.net/l1SGfBOzwcoKTuLZSsBGJQ==/2695685851975900600.png" />， 则该心形线的弧长等于 （;; ）? <img src="http://img2.ph.126.net/Z2kfcGdQYGVls8Ce891a9w==/1419196832675449814.png" />|<img src="http://img2.ph.126.net/4jCSzt215P9escwFQA6wzg==/6619425037072595432.png" />|<img src="http://img1.ph.126.net/L43F-slSm-WU9DuF-i0ZXg==/3228517982971533103.png" />|<img src="http://img1.ph.126.net/J3Pcx4QQxPm779wQddVKQA==/1047649863334615897.png" />
- n位触发器构成的扭环形计数器，其无效状态数有( )个。? <img src="http://img1.ph.126.net/syawN86lkJeyXf8emf2enw==/6630087001327300267.png" />|<img src="http://img2.ph.126.net/0JBcfdqdyUjt5-uTh7cmUQ==/4886405595797893661.png" />|<img src="http://img2.ph.126.net/qBQGx0Z9T_pt4PZJc8Nn7g==/6608560762678510607.png" />|<img src="http://img0.ph.126.net/elyGxaiPbD815O67sULOnQ==/1876312194853825038.png" />