为什么电解槽启动前需首先经历焙烧过程?
参考答案:
1.排除砌体水分,加热熔池;
2.焦化熔池内炭块之间和阴极钢棒周围的糊料。
Mr Smith lives _____ that building. His house is _____ the fifth floor. [ ]
A. in; on
B. of; to
C. on; in
D. to; at
水泥混凝土路面板的施工方法有哪几种?