拆除工程作业要不要进行施工组织设计和制定安全技术措施规定?
A smoking burner with a pulsating flame in auxiliary boiler, is an indication that the()
A. fuel oil supply temperature is normal
B. burner electrode is incorrectly positioned
C. fuel/air ratio is incorrect
D. ignition current is too low
国家奖学金评选后,将在学院公示()个工作日无异议后,上报学校审批。
A. 3
B. 4
C. 5
D. 7
雷电冲击试验的测量方法是由()配接高压示波器和峰值表来组成测量回路。
A. 高压分压器
B. 球隙装置
C. 电感元件串联装置