A wearable personnel protection indicator signifies the presence of hydrogen sulfide by _____
A) changing color B) vibrating
C) reducing in size D) emitting a bad smell
A
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Si se construye una escalera con una altura total de 7'-7" (2.10 m - 17.80 cm), la cantidad de contrahuellas necesarias y la altura de la contrahuella es de_____
a. 11 contrahuellas, cada una de 71 /2" (19.05 cm) de alto b. 12 contrahuellas, cada una de 7" (17.80 cm) de alto c. 13 contrahuellas, cada una de 7" (17.80 cm) de alto d. 14 contrahuellas, cada una de 71 /4" (18.40 cm) de alto
Technician A says that the paper test could detect a burned valve. Technician B says that a grayish white stain could be a coolant leak. Which technician is correct?
A) Technician A only B) Technician B only C) Both Technicians A and B D) Neither Technician A nor B
What are the broad areas that commercial refrigeration equipment is grouped in based on the evaporator coil temperature?
A) Perishable frozen and perishable non-frozen B) Frosting, non-frosting, and defrosting C) Refrigerator and freezers D) High, medium, low, and cryogenic temperatures
Which of the following is not a type of Babbitt metal?
A. steel B. aluminum C. bronze D. copper-lead