将砖、石、砌块等粘结成为砌体的砂浆称为砌筑砂浆。
N17等型平车地板厚度须为()。 ["50mm","55mm","60mm","70mm"]
It's more()to buy a season ticket if you travel every day ["cheap","economic","economical","saving"]
现场清挖土方遇接地网及力能管线时,应及时向()部门汇报,并做出妥善处理。 ["环保","城建","市政","有关"]
目前国家允许食用农产品在包装、保鲜、贮存、运输过程中合理使用部分具有保鲜、防腐功能的食品添加剂。
简单谈谈对山东民歌《沂蒙山小调》的认识。