设集合, A上的关系 , , 则 = ________________________, =____________________________, =________________________.https://img-ph-mirror.nosdn.127.net/Ir_BnXKpLuVzUv8qV7DePQ==/2596043710222405203.pnghttps://img-ph-mirror.nosdn.127.net/W0kxC_oqhCGcgMXSIxmrNA==/6608671813352373524.pnghttps://img-ph-mirror.nosdn.127.net/HMPOvS1yBV1g-eoGPCLtlw==/6631646108818998910.pnghttps://img-ph-mirror.nosdn.127.net/4eO2QDOmozl6k9VETPbb4w==/6608268292585874055.pnghttps://img-ph-mirror.nosdn.127.net/6cXPP6rjlU7ck0eZJzL6Bg==/1237645472697074344.pnghttps://img-ph-mirror.nosdn.127.net/HsOfJ7hBkTkJ0DABRo-H4g==/6597830628705090333.pnghttps://img-ph-mirror.nosdn.127.net/0Vf76qI2ztdq1ovUkaFePw==/6608268292587415060.pnghttps://img-ph-mirror.nosdn.127.net/LuQvCoi51wQzU--Fomwenw==/6597909793542286834.png

设和是上的关系，是所有人的集合，是的父亲,是的母亲，则表示关系 。https://img-ph-mirror.nosdn.127.net/ESY9hFi23NAabl9RRfSZcA==/6599274287471122402.pnghttps://img-ph-mirror.nosdn.127.net/dl2wfIFSXjd5ao0S-jNKpg==/3190800336092245485.pnghttps://img-ph-mirror.nosdn.127.net/viu09dkVU62lxQQrip7sig==/6608414527632298491.pnghttps://img-ph-mirror.nosdn.127.net/viu09dkVU62lxQQrip7sig==/6608414527632298491.pnghttps://img-ph-mirror.nosdn.127.net/dsKr_a4ypriQVYd7THzq7Q==/1273111319681924125.pnghttps://img-ph-mirror.nosdn.127.net/7tR6HCBv0lqp1Ocndc-ewQ==/6608204520911440137.pnghttps://img-ph-mirror.nosdn.127.net/l12iRFR3uQ7XKxTSDY2vbg==/6630640055676431735.pnghttps://img-ph-mirror.nosdn.127.net/9r8OCogmCkBNd89da3sH9w==/6632361890888612397.pnghttps://img-ph-mirror.nosdn.127.net/7tR6HCBv0lqp1Ocndc-ewQ==/6608204520911440137.pnghttps://img-ph-mirror.nosdn.127.net/l12iRFR3uQ7XKxTSDY2vbg==/6630640055676431735.pnghttps://img-ph-mirror.nosdn.127.net/ehdh6-LivS45DNXSYLhrYA==/6632336602121178249.png

设,有划分，则，分别为https://img-ph-mirror.nosdn.127.net/_kVuHX7nBFHlNfzR3AeTRQ==/6631704382934470362.pnghttps://img-ph-mirror.nosdn.127.net/4QRI30JkP7V6jj57tHynuQ==/6608641027026760798.pnghttps://img-ph-mirror.nosdn.127.net/orOIv8YcdU_h_lUOdGNFCg==/6608226511145727302.pnghttps://img-ph-mirror.nosdn.127.net/giAuaiFtJSeucb0heLidqQ==/6597538158612635068.pnghttps://img-ph-mirror.nosdn.127.net/x1gGO27o3MWmLN9driNajQ==/1045116588544232433.pnghttps://img-ph-mirror.nosdn.127.net/A4wrtpUR5BGSeNCmbq_OcA==/1383168035656711023.png

‏单色光垂直照射宽度为a的狭缝，则所形成的夫琅和费衍射的明纹、暗纹的计算公式分别是‎ A: 暗纹公式<img src="http://img-ph-mirror.nosdn.127.net/Col4q733bC2LTWMYOS_kPg==/6631483381097396880.png"> B: 暗纹公式<img src="http://img-ph-mirror.nosdn.127.net/gAfmdyaYZbSjb7_nXfpx5g==/6631474585004374606.png"> C: 明纹公式<img src="http://img-ph-mirror.nosdn.127.net/Col4q733bC2LTWMYOS_kPg==/6631483381097396880.png"> D: 明纹公式<img src="http://img-ph-mirror.nosdn.127.net/gAfmdyaYZbSjb7_nXfpx5g==/6631474585004374606.png">

在迈克耳逊干涉仪的一条光路中，放入一折射率为 n ，厚度为 d 的透明薄片，放入后，这条光路的光程改变了‏‍‏ 未知类型：{'options': ['&#91;img src="http://img-ph-mirror.nosdn.127.net/qn09c9Ci2nF9pX9R87BxVQ==/1050183138125143573.png"&#93;', '&#91;img src="http://img-ph-mirror.nosdn.127.net/GjabRIu5CvtF-SKp6ut70Q==/2884274086371701957.png"&#93;', '&#91;img src="http://img-ph-mirror.nosdn.127.net/rf2xtN1bhxwDAbFG7S3Wsw==/1176565402668152865.png"&#93;', '&#91;img src="http://img-ph-mirror.nosdn.127.net/mMvWdrQc2FqddZT5ORs6ZA==/6630695031257858715.png"&#93;'], 'type': 102}

已知图示正弦稳态电路中，，， 与同相位，则电阻等于（）https://img-ph-mirror.nosdn.127.net/nfsvfafQQ-s9705aqSe83g==/1162773128809331192.jpghttps://img-ph-mirror.nosdn.127.net/1CYCIHT8eHzO9zvgSekljQ==/2788572594289995839.pnghttps://img-ph-mirror.nosdn.127.net/AOBg8D1t2REBRnqQ4E01Ew==/2886244411208681638.pnghttps://img-ph-mirror.nosdn.127.net/vO9YXxtDLO9V3W1XvSWC_Q==/2768587870943536477.pnghttps://img-ph-mirror.nosdn.127.net/nSu8h9F7trtIa3IUpAe4xg==/6619211731816726558.pnghttps://img-ph-mirror.nosdn.127.net/ESY9hFi23NAabl9RRfSZcA==/6599274287471122402.png

‎置于空气中的折射率为 n 的劈尖状板，在波长为λ的单色光的垂直照射下，相邻的两条等厚干涉条纹对应的薄膜厚度之差等于‌ 未知类型：{'options': ['&#91;img src="http://img-ph-mirror.nosdn.127.net/wCX8ruxnuWeTkcDyuHIbrw==/1038642664079781619.png"&#93;', '&#91;img src="http://img-ph-mirror.nosdn.127.net/E4pLEvl66oEglYlu_VHILA==/6630770897560175543.png"&#93;', '&#91;img src="http://img-ph-mirror.nosdn.127.net/fcDheyV8ZEZtuw77KcpcbA==/6630301406094316308.png"&#93;', '&#91;img src="http://img-ph-mirror.nosdn.127.net/YCPyo8OH0kQUkwq71yxhtA==/6608514583189659373.png"&#93;'], 'type': 102}

定点8位字长的字，采用2的补码形式表示8位二进制整数，可表示的数范围为 。 A: -127～+127 B: [img=101x19]1803765d8f4653c.jpg[/img] C: [img=79x17]1803765d9846fa2.jpg[/img] D: -127～+128

定点8位字长的字，采用2的补码形式表示8位二进制整数，可表示的数范围为 。 A: -127～+127 B: [img=101x19]1803713b80b766d.jpg[/img] C: [img=79x17]1803713b88d8443.jpg[/img] D: -127～+128

定点8位字长的字，采用2的补码形式表示8位二进制整数，可表示的数范围为 。 A: -127～+127 B: [img=101x19]180380c1f67aad3.jpg[/img] C: [img=79x17]180380c1ff41beb.jpg[/img] D: -128～+127