Which of the following statements about smooth bore nozzle reaction is MOST accurate?
A. Lean backward to control nozzle as action increases.
B. Nozzle valves should be opened slowly to minimize water hammer.
C. Increasing discharge pressure and flow rate increases nozzle reaction.
D. Additional personnel are required for operating smooth bore nozzles on all hoselines.
C
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The spinal cord extends from the base of the medulla oblongata to the junction between the ________ lumbar vertebrae
a. first and second b. second and third c. third and fourth d. fourth and fifth
The relief valve on a bubble humidifier serves which of the following functions? 1. It indicates when flow has been interrupted. 2. It protects the device from pressure damage. 3. It warns you when the water level is low
a. 1 and 2 only b. 2 and 3 only c. 1 and 3 only d. 1, 2, and 3