Technician A says that all metal-to-metal contact areas of the disc brake system should be lubricated with special brake grease for proper operation. Technician B says that the lubrication helps reduce brake noise (squeal). Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
C
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The float switch contacts may be either normally open or normally closed and ____.
a. may not be submerged b. may not be suspended c. may be submerged d. may be suspended
Noise induced hearing loss is permanent. How can you prevent hearing loss in the workplace?
What will be an ideal response?
Positive pressure ventilation is effective:
A. when opening of doors and windows in the structure can be controlled. B. only if you can create a lower pressure zone in the structure. C. if the exhaust opening is smaller than the entry point, creating a Venturi effect. D. if an entire floor is ventilated at a time, starting at the highest floor and working down.
If the temperature of a liquid is lowered, it causes the Reynolds number to __________.
A. increase B. decrease