How many air changes per hour can a fan moving 200 CFM provide for a room with 500 sq ft of floor space and 8-ft ceilings?
A) 20 air changes B) 3 air changes C) 12 air changes D) 1 air change
B
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The influential cultural film during the 1920s, Birth of a Nation by D.W. Griffith, stirred extensive protest by African Americans because
A. the film was heavily financed by white racist Hollywood film business owners. B. the film depicted the black leader Marcus Garvey in an unfavorable light. C. African Americans were not allowed to see the film even in northern movie theaters. D. the film glorified the Ku Klux Klan and portrayed blacks as corrupt politicians or rapists. E. Griffith failed to give credit to the civil rights advocacy work and black intellectual leadership of W.E.B. Du Bois.
Leaks in refrigeration systems other than air-conditioning systems, commercial refrigeration systems, or industrial process cooling systems must be repaired if they have an annual leak rate of:
A) 10 percent of the charge per year. B) 15 percent of the charge per year. C) 25 percent of the charge per year. D) 35 percent of the charge per year.
__________________gears are used extensively in the differential where they transfer torqueat right angles to the drive axles.
Fill in the blank(s) with the appropriate word(s).
What part should be removed to test cylinder compression on a diesel engine?
A) Injector B) Glow plug C) Intake valve rocker arm and stud D) Glow plug or injector