One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 447
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Fill-in-the-blank: Negative pressure is strictly prohibited in the calcium carbide method acetylene generation system. The connections between the storage tanks in the acetylene feeding system must remain unobstructed; it is forbidden for there to be any blockages between these tanks. The sealing performance of the disc valves must also be maintained. Answer: Nitrogen pipe, vent pipe, hopper feeding
Nitrogen pipe, vent pipe, hopper feeding
Nitrogen pipe, vent pipe, hopper feeding
Nitrogen pipe； vent pipe ； Serial charging
Negative pressure is strictly prohibited in the calcium carbide-based acetylene generation system. The nitrogen supply between the storage tanks in the acetylene feeding system must remain unobstructed; the sealing performance of the disc valves between these tanks must also be maintained.
Nitrogen pipe, vent pipe, hopper feeding
Negative pressure is strictly prohibited in the calcium carbide-based acetylene generation system. The connections between the storage tanks in the acetylene feeding system must remain unobstructed; negative pressure between these storage tanks is strictly forbidden. The sealing performance of the disc valves must be maintained.
Negative pressure is strictly prohibited in the calcium carbide-based acetylene generation system. The nitrogen pipes and vent pipes between the storage bins in the acetylene feeding system must remain unobstructed; feeding from one bin to another is strictly forbidden, and the sealing performance of the disc valves must be maintained.
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