Production Technology: 【Question of the Day】Sunday, April 03, 2011
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This post was last edited by *nyang3390 on 2011-4-6 09:14. Multiple-choice question: 1. The higher the output frequency of the inverter, the more ( ) the motor speed. A: High B: Low C: Unchanged 2. The pH value of the water exiting the cation exchanger in the demineralization system is ( ) compared to that of the raw water. A: High B: Low C: Unchanged Note: 1. Please hide the recovery option; for instructions, see: http://bbs.hcbbs.com/thread-492556-1-1.html. 2. Do not edit after replying. 3. The top 50 participants will definitely receive a reward. 4. The answer will be visible upon reply. The answers are A, B. Explanation: Option B is chosen for question 2 because the function of the cation exchanger is to remove other cations from water except for H ions, resulting in an acidic environment. 1: A2: B
Reply 1# pzhmotor: 1. High, 2. Low.