中国大学MOOC: 磁介质有三种，用相对磁导率 http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/66a201ce83314157a30d93406f6e27fc.png表征它们的特性时，
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- 中国大学MOOC: 磁介质有三种， 用相对磁导率表征它们的特性时
- 中国大学MOOC: 磁介质有三种，用相对磁导率μr表征它们各自的特性时 （ ）
- What are the comedies of Shakespeare? A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/1882addb95d34f3e877db8ec62e82507.png"/> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/4e230d2e03cc46c2b717155e90fdd081.png"/> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/7f4368645eff4e4b9ec89b237843dabd.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/5ccbfc9718084d318abfbbe254ae048b.png"/>
- Which one is Homer’s epic? A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/60a09e42c1cb4c988adcf2fa43a2170c.png"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/148a547a82cd4f5482de272b09415b7f.png"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/bc77b52b6ae747fda43ef56a09994b9f.png"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/9a18e23e6d9a453ea18eaabd88d99376.png">
- What are the “Four Great Tragedies” of Shakespeare? A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/bf2842136acc4afba0ab8f98320c7d00.png"/> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/ac6493ebe0b44370ac61898fa86c032b.png"/> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/b34e70254de6499eb4641abf0415463b.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201901/5a8ed85351f948a393c0aca57418e72a.png"/>