皮皮学，免费搜题
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【判断题】
将一根条形磁铁截去一为条形磁铁,它仍然具有两个磁极A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】烟酸缺乏可引起（）。此病起病慢，如治疗不及时，则可出现皮炎、腹泻、痴呆“3D”症状。
【简答题】烟酸缺乏时可引起 ,主要累及皮肤、消化系统、神经系统,其典型病例可有 、 和痴呆,又称 “三 D ”症状。
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【简答题】Directions: Read the following passage, Answer the questions according to the information given in the passage. March 22nd every year has been the World Water Day since 1993. Everyone knows that over ...
【简答题】Directions: Read the following passage. Answer the questions according to the information given in the passage and required words limit. Write your answers on your answer sheet. Few places have as muc...
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