发布时间:2025-01-30 20:46:16
【答案】:A、C
早强剂是指能加速混凝土早期强度发展的外加剂。主要作用机理是加速水泥水化速度,加速水化产物的早期结晶和沉淀。
珠海市格力花园在哪里 离关口有多远怎么珠海市格力花园离拱北关口有多远
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