One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； July 14th
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Multiple-choice question: In the production of acetylene via the calcium carbide method, the reasons for ignition during the feeding process into the generator are ( ). A. Low nitrogen expulsion pressure or no nitrogen expulsion； B. The flap valve of the lower storage hopper is not airtight, allowing acetylene gas to leak into the upper storage hopper ； C. The drain pipe and drain flame arrester are blocked. D. The nitrogen purity is low and the oxygen content is high. Answer: ABCD
B. The flap valve of the lower storage hopper is not airtight, allowing acetylene gas to leak into the upper storage hopper；
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ABCD~~~~~~~~
A. Low nitrogen discharge pressure or no nitrogen discharge； B. The flap valve of the lower storage hopper is not airtight, allowing acetylene gas to leak into the upper storage hopper ； C. The drain pipe and drain flame arrester are blocked. D. The nitrogen purity is low and the oxygen content is high
The cause of fire during the feeding process into the generator in calcium carbide-based acetylene production is (ACD): A. Low nitrogen expulsion pressure or no nitrogen expulsion； B. The flap valve of the lower storage hopper is not airtight, allowing acetylene gas to leak into the upper storage hopper ； C. The drain pipe and drain flame arrester are blocked. D. The nitrogen purity is low and the oxygen content is high