One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 489
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Multiple-choice question: During the production of acetylene by the calcium carbide method, the reasons for low inlet pressure in the water ring compressor unit are ( ). A. Water accumulation in the gas holder pipes B. Low gas supply from the generator C. Excessively high liquid level in the cooling tower (condensation of water vapor in the crude acetylene gas) D. Too low opening degree of the compressor reflux valve. Answer: ABCD
ABCD~~~~~~~~~~~~
A. Water accumulation in the gas holder pipes B. Low gas supply from the generator C. Excessively high liquid level in the cooling tower (condensation of water vapor in crude acetylene gas) D. Insufficient opening degree of the compressor reflux valve