耐热混凝土是指在()高温下长期使用,仍能保持其物理力学性能的混凝土。 ["100~1000℃","100~1300℃","200~1000℃","200~1300℃"]
下列说法不正确是.香料烟晾房由() ["房顶、门、观察窗、墙壁和挂烟杆构成","框架、房顶、墙壁和挂烟杆构成","框架、门组成","框架结构.、上盖部分、下围部分、房脚通风门"]
浇筑耐酸混凝土宜在温度为()的条件下进行。 ["0~20℃","5~20℃","15~30℃","10~30℃"]
如何理解柏拉图的灵感说?
引气剂及引气减水剂混凝土的含气量不宜超过() ["3%","5%","10%","15%"]
朗加纳斯认为,如何创造出有崇高美的作品?