Monday, September 12, 2022
Saturday, September 17, 2022
Friday, September 16, 2022
问题:特种设备使用单位应当对在用特种设备进行经常性日常维护保养,并定期...
Monday, September 12, 2022
问题:将锅炉分为蒸汽锅炉、热水锅炉和汽水两用炉的依据是()...
Friday, September 16, 2022
Friday, September 16, 2022
Monday, September 12, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
问题:锅炉停用时发生腐蚀应具备的条件有有空气进入和()。...
Thursday, September 15, 2022
问题:影响混凝的因素有:水的()、()的用量、水温、水和()的混合速度...
Monday, September 12, 2022
Friday, September 16, 2022
Friday, September 16, 2022
问题:为了提高阴床除硅效果,再生时可控制再生液浓度先大后小。...
Sunday, September 11, 2022
Monday, September 12, 2022
Saturday, September 17, 2022
问题:在锅炉与安全阀之间,可以装设取用蒸汽的管道或阀门。...
Saturday, September 10, 2022
Monday, September 12, 2022
问题:测定Na<sup>+</sup>时,应用二异丙胺或饱和氢氧化钡将...
Wednesday, September 14, 2022
Monday, September 12, 2022