【单选题】【消耗次数：1】
屋面分仓缝处常用的密封材料为()。
①
水泥砂浆
②
油膏
③
细石混凝土
④
防水砂浆
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②
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水泥砂浆宜用于（ ）。
①
砌筑潮湿环境以及强度要求较高的砌体
②
砌筑干燥环境以及强度要求较高的砌体
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