铅蓄电池每个内负极板总比正极板[填空(1)]片,以減轻正极板的[填空(2)],防止[填空(3)] A. 多一 B. 变形 C. 活性物质脱落
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【单选题】听力原文:Why was the board meeting pushed back? (A) Because Mr. Gomez is on a business trip. (B) Yes, I' II push it up to tomorrow. (C) No, the white board is pretty new. (27)