发布时间:2025-01-30 05:35:08
【答案】B
【答案解析】与普通混凝土小型空心砌块相比,轻集料混凝土小型空心砌块密度较小、热工性能较好,但干缩值较大,使用时更容易产生裂缝。
十一过后准备去杭州请问九莲新村附近有哪些大的电脑城我想做维修方面的学徒
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