A. color difference
B. Orange peel phenomenon
C. fish-eye defect
D. sagging
Answer: C
Analysis: Oil residue will cause “fish eye” defects on the surface of car paint, which seriously affects the coating quality.
Answer: It uses water as the lubricant, eliminating the need for oil and reducing the risk of contamination.
A. 10-20 B. 20-30 C. 30-40 D. 40-50 Answer: C Analysis: The average annual maintenance cost of environmentally friendly oil-free air compressors is 200,000 – 300,000 yuan, which is 30-40 less than traditional models…
A. Gas separation and storage B. Home use of C. Commercial places use D. Agricultural production uses answer: A. Gas separation and storage
Answer: The advantages include no oil contamination, low maintenance costs, long service life, and high energy efficiency.
Answer: It alerts the operator with visual and audible warnings, and provides diagnostic information to help identify the problem.