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“\"Chlor-alkali exam questions\" [068] – activity post; please hide your replies

2010-04-06View Original

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This post was last edited by sunjl1981 on 2013-1-6 at 20:41. To encourage active participation from members, 3 wealth points are given for each correct answer; if a calculation process is provided, or if a valid reason is given, an additional reward of 3 to 6 wealth points is awarded. I believe it’s not about the quantity, but having a reward is enough. The key is everyone’s active participation (participation brings talent) and progressing together. (Note: This post can only have ratings from moderators; other ratings are invalid.) 1. The efficiency factor of evaporation refers to the number of evaporators in the evaporation system. ( ) 2. High-concentration alkali vapor formed by alkali mist can cause severe damage to a person’s trachea and lungs, and may even lead to pneumonia. () 3. In the case of forced-circulation evaporators, since external power is used to overcome the circulation resistance, a large driving force is generated for circulation, allowing the circulation speed to reach 2–3 m/S. () Please hide your replies; without hiding them, no scoring will be given. For instructions on how to hide them, click here: Hiding method. Answers using the same IP are valid only for the first post. Also, be careful when posting – edits are invalid! Thank you all! Answer key: Wrong, Right, Right # hcbbs
Reply #22010-04-06
1. The efficiency factor of evaporation refers to the number of evaporators in the evaporation system. (Incorrect) 2. High-concentration alkali vapor formed by alkali mist can cause severe damage to a person’s trachea and lungs, and may even lead to pneumonia. (Yes) 3. For forced-circulation evaporators, since external power is used to overcome the circulation resistance, a large driving force is generated for circulation, allowing the circulation speed to reach 2–3 m/S. (right)
Reply #32010-04-06
1、× 2、√ 3、√
Reply #42010-04-06
1. The efficiency factor of evaporation refers to the number of evaporators in the evaporation system. (×) 2. High-concentration alkali vapor formed by alkali mist can cause severe damage to a person’s trachea and lungs, and may even lead to pneumonia. (√) 3. For forced-circulation evaporators, since external power is used to overcome the circulation resistance, a large driving force is generated for circulation, allowing the circulation speed to reach 2–3 m/S. (×)
Reply #52010-04-06
1. The efficiency factor of evaporation refers to the number of evaporators in the evaporation system. (×) 2. High-concentration alkali vapor formed by alkali mist can cause severe damage to a person’s trachea and lungs, and may even lead to pneumonia. (×) 3. For forced-circulation evaporators, since external power is used to overcome the circulation resistance, a large driving force is generated for circulation, allowing the circulation speed to reach 2–3 m/S. (×)

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