Types of humidifiers used with commercial air-handling equipment include:
A) Bypass, atomizing, and wetted media. B) Direct expansion, steam, and hot water.
C) Steam grid, steam pan, and direct water spray. D) Direct expansion, chilled water, and steam.
C
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The ____________________ cells are in the seminiferous tubules of the testis, and they function as "nurse cells" for developing spermatozoa
Fill in the blank(s) with correct word
It is recommended that you update your directory of reporters:
a. at least once a week b. every few weeks c. every few months d. at least once a year
What effect do non-condensable gasses have on system performance?
A) Non-condensables do not affect condenser pressure because they do not condense. B) They cause an increase in head pressure and a decrease in capacity. C) They cause a decrease in both head pressure and capacity. D) They cause a decrease in head pressure and an increase in capacity.
In a maintenance inspection routine, when should fan belts be replaced?
A. Every time any engine maintenance is performed. B. When glazed, cracked or nicked. C. Only when fully worn out. D. When belts squeal or become noisy.