锅炉本体受热面安装程序中的试验是()。
A.压力试验
B.泄漏性试验
C.灌水试验
D.通球试验
参考答案:D
Are they still for holiday in Beijing now?They should have come back now.
附墙烟囱、垃圾道建筑面积系数()。