【Pump Technology Edition: Daily Question】January 30, 2020 (Spring Festival bonus: 10 Wealth points for those who answer correctly before the answers are revealed)
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89. When working at heights on towers, equipment, containers, etc., fitters should use ( ) and secure it with a rope: A. Fixed wrench B. Adjustable wrench C. Specialized wrench. Answer to question 88 from yesterday: A. 88. The power source for pneumatic clamping devices is compressed air, and the pressure of this compressed air is generally (A) MPa. A、0.4～0.8 B、0.5～0.8 C、0.5～1 D、1～1.5 (Answers are released the day before they are made public; those who get it right before the release receive 10 wealth points, those who get it right after the release receive 5 wealth points, and those who participate receive 3 wealth points.)
A General provision: When working at heights on towers, equipment, containers, etc., fitters should use ratchets; if wrenches are used, they must be secured with ropes.