When multiple compressors are installed in parallel on the same refrigeration system, provisions must be made to insure that:
A) All compressors start and stop at the same time.
B) The refrigerant flow is equal through all compressors.
C) The oil level is correct in all compressors.
D) All compressors pull the same amount of current.
C
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?Inhaling fumes containing decomposition products of ____ may cause influenza-like symptoms. This is sometimes called "polymer-fume fever" and includes fever, cough, and malaise.
A. ?polyethylene terephthalate (PET) B. ?polyoxymethylene (POM) C. ?polyvinyl chloride (PVC) D. ?fluoroplastics
A method called _____ gives people in urban areas another way of growing food ?by replacing regular plants with plants that produce food
A) covered boxing? B) edible landscaping? C) raised bedding? D) hoop housing
Where are adhesives used?
What will be an ideal response?
Two technicians are discussing the machining of brake drums. Technician A says that most brake drums cannot be machined more than 0.060 in. oversize. Technician B says that brake drums on a common axle should be machined to within 0.035 in. of each other. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician