A. semiconductor manufacturing
B. food production
C. building construction
D. pharmaceutical industry
Answer: C
Analysis: Due to the high oil content of compressed air, oil-injected air compressors are usually used in occasions where the purity of compressed air is not high, such as construction.
Answer: The biggest difference is that the GWL Series compressor does not use lubricating oil during the compression process, providing oil-free compressed air.
Answer: The GWL Series compressor is produced by Shanghai Gran克林 Group (assuming “Gran克林” is a placeholder for the actual company name, which should be replaced with the correct name if known).
A. General B. Poor C. Better D. Very good answer: D. very good
Answer: It should be installed in a cool, dry place with adequate ventilation and away from sources of heat and moisture.
Answer: It can be determined by observing the pressure differential indicator of the water filter or based on usage time and water quality.