【Daily Question: Pump Equipment】True or False Question, April 4, 2019

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This post was last edited by 3983596_FPPZ on 2019-4-4 09:51, with the file bk14.jpg. Rules for the true/false questions: 1. If both answers are incorrect, +2 wealth for active participation; if one answer is correct and the other is incorrect, +5 wealth; if both answers are correct, +8 wealth. 2. If only one answer is provided, unless it is clear which question’s answer it is, a correct answer earns +5 wealth points, while an incorrect answer earns +2 wealth points; in all other cases, it counts as active participation and grants +2 wealth points. 3. Rewards for answers are available once per person only. 4. Each reply allows scoring for only one person. 5. The answer and its explanation will be visible after responding. 6. The reward is valid for 48 hours; no reward will be given if the deadline is passed. Again, awards for academic performance – come by here every day. 1. The material ZG230-450 is a cast carbon steel; its various mechanical properties are similar to those of 45# steel ( ) ； 2. When gears of different sizes but with the same mechanical properties mesh with each other, the small gear experiences greater wear than the large gear ( ). Answer: Incorrect (close to 25# steel): Correct