A. lower cost
B. simple maintenance
C. Pure compressed air
D. wide application range
Answer: C
Analysis: The advantages of oil injection air compressor include low cost, simple maintenance and wide application range, but the compressed air oil content is high, not its advantages.
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. Color difference B. Orange peel phenomenon C. Fisheye defect D. Hanging answer: C analysis: Oil residue will cause “fish eye” defects on the surface of the car paint, seriously affecting the coating quality.
Answer: It consumes less energy and operates more efficiently, resulting in lower operating costs.
Answer: It alerts the operator with visual and audible warnings, and provides diagnostic information to help identify the problem.
Answer: The compressor is designed with advanced balancing techniques to minimize vibration and noise.