One question per day, the correct answer will be rewarded with 6 wealth, and the participant will be rewarded with 2 wealth； January 8
Thread Content
multiple choice questions: What harm does moisture in lubricating oil do to lubricating oil ( ) A. Moisture can reduce the viscosity of lubricating oil and weaken the strength of the oil film, thereby reducing the cost of lubrication. B. Water will freeze when it is lower than 0oC, seriously affecting the low-temperature fluidity of lubricating oil. C. Moisture can accelerate the oxidation of lubricating oil and promote the corrosion of metals by low-molecular organic acids. D. Moisture can increase the foaming property of lubricating oil, making lubricating oil prone to foaming. Answer: ABCD
A. Moisture can reduce the viscosity of lubricated oil and weaken the strength of the oil film, thus reducing the cost of lubrication. B. Water will freeze when it is lower than 0oC, seriously affecting the low-temperature fluidity of lubricating oil. C. Moisture can accelerate the oxidation of lubricating oil and promote the corrosion of low-molecular organic acids on metals. D. Moisture will increase the foaming property of lubricating oil, making lubricating oil prone to foaming.