下列说法正确的是 A制氧气一定要用二氧化锰作催化剂b所有的酸和碱都能使指示剂变色c物质�生缓慢氧化时一定放出热量d�属都能与酸溶液 Template




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tomski下列说法正确的是 a制氧气一定要用二氧化锰作催化剂b所有的酸和碱都能使指示剂变色c物质�生缓慢氧化时一定放出热量d�属都能与酸溶液 coloring