One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 254
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Reasons for low outlet pressure of the water ring pump in the calcium carbide method for acetylene production: ( ) A. Low flow rate of water in the pump B. High flow rate of acetylene gas C. Large gap between the pump’s impeller and the casing D. The pump’s circulation valve is not closed properly. Answer: ABCD
Reasons for low outlet pressure of the water ring pump in the calcium carbide method for acetylene production (ABCD): A. Low circulation water volume of the pump; B. High acetylene gas flow rate; C. Large gap between the pump’s impeller and the casing; D. The pump’s circulation valve not being properly closed
A. The pump’s circulation volume is low. B. The acetylene gas flow rate is high. C. The gap between the pump’s impeller and the casing is large. D. The pump’s circulation valve is not closed properly
Reasons for low outlet pressure of the water ring pump in the calcium carbide method for acetylene production (ABCD): A. Low volume of water circulating in the pump; B. High flow rate of acetylene gas; C. Large gap between the pump’s impeller and the casing; D. The pump’s circulation valve not being properly closed
C. The gap between the pump’s impeller and the casing is large
Answer: A. The pump’s circulation volume is low. B. The acetylene gas flow rate is high. C. The gap between the pump’s impeller and the casing is large. D. The pump’s circulation valve is not closed properly. All of the above
A. The pump’s circulation volume is low. B. The acetylene gas flow rate is high. C. The gap between the pump’s impeller and the casing is large. D. The pump’s circulation valve is not closed properly
Choose D. The circulation valve of the pump is not closed properly
Reasons for low outlet pressure of the water ring pump in the calcium carbide process for acetylene production (ABCD)
Answer: A, B, C, D are correct