The switching valves on the AIR pump have failed several times. Technician A says that a defective exhaust check valve could be the cause. Technician B says that a restricted exhaust system could be the cause. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
C
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La capa inferior de aislamiento de un tanque de gran tamaño podría ser de:
a. silicato de calcio ("kaylo"). b. vidrio celular. c. fibra de vidrio. d. espuma rígida.
A command signal, sometimes called the ____ or reference signal, is programmed into the DC drive and sets the desired operating speed of a DC motor.
A. steady state B. target C. set point D. encoder
The lower temperature of the cooler will
a. speed up the activity of the flower b. reduce the respiration and transpiration rates c. increase the amount of water needed d. decrease the amount of water needed
In order for disease to grow, there must be a(n) ____; in the case of working in interior plantscaping, a
plant.
a. interior pest c. receptacle b. host d. sore on the plant