电焊作业现场周围不得堆放（）。

单项选择题In TATheory, “One usually shows a strong desire to control others, wishing others to act according to their own intentions, and often educating, teaching, matching and controlling others in life”. What kind of Ego state does it belong to A、 Ego state of nutritional parents B、Ego state of controlling parents C、adult-like Ego state D、adaptive children’s Ego state E、 free children’s Ego state

单项选择题法规规定，国家对严重危及生产安全的工艺、设备实行（）制度。