为您找到与2020-2021学年北京市高三年级学科综合能力测试化学相关的共 200 个结果:
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雅礼中学2024届高三综合自主测试(一)化学参考答案一、选择题(本题共14小题,每小题3分,共42分)1、B【解析】“常恐秋节至,焜黄华叶衰”,树叶由绿变黄是树
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河北区2023-2024学年度高三年级总复习质量检测(一)4.如图是周期表中短周期的一部分,A、B、C三种元素的原子核外电子总数等于B的化学质量数,B元素的原子
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