【Daily Question: Pump Equipment】True or False Question, 1/18/2019

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Rules for the multiple-choice questions in bg2.png: 1. If both questions are answered incorrectly, +2 wealth is awarded for active participation; if one question is answered incorrectly and the other correctly, +4 wealth is given; if both questions are answered correctly, +6 wealth is awarded. 2. If only one answer is provided, unless it is clear which question’s answer it is, a correct answer earns +4 wealth points, while an incorrect answer earns +2 wealth points; in all other cases, it is counted as active participation and awards +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 after that period. Studying* and winning awards again; come by here every day. 1. The internally mounted small spring and bellows type single-face mechanical seal is suitable for applications involving media with a high content of particles ( ). 2. The metal surfaces that are in static contact with the O-ring seals should undergo additional hardening treatment ( ). Answers: False, False