When used with a smooth bore nozzle, a nozzle control valve that causes turbulence when partially open which can affect the quality of a fire stream is the:
A. ball valve.
B. slide valve.
C. standpipe valve.
D. rotary control valve.
A
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Calculate the velocity of red light with a wavelength of approximately 4.0 nm (nm = 10^-9).
a. 7.5 × 10^-1 nm/sec b. 7.5 × 10^18 nm/sec c. 1.2 × 10^-17 nm/sec d. 1.2 × 10^1 nm/sec
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Which of the following Z codes can only be used for a principal diagnosis?
A. Z13.820 B. Z00.00 C. Z16.342 D. Z18.01
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