Answer: Perform a series of tests to check the discharge pressure, capacity, and energy efficiency, and compare the results with the manufacturer’s specifications.
Answer: Follow the manufacturer’s instructions for draining and refilling the water tank.
A. Screw B. Piston C. Centrifugal wheel D. Scroll disk answer: B. piston
What is the usual manufacturing cost of oil-injected air compressors? A. Higher B. Lower C. Same as oilless air compressor D. The answer cannot be determined: B Analysis: The manufacturing cost of oil-injected air compressors is usually low, and the initial investment is small, so it is suitable for…
A. Small market share B. Few product types C. Insufficient technological innovation D. Large market share and rich product categories Answer: D. Large market share and rich product variety
A. B. major cities in the world Home use, commercial use C. Oil and gas, construction, logistics D. Manufacturing, oil and gas, construction Answer: A. major cities around the world