Which class of refrigerants is typically supplied in drums?
a. Class I
b. Class II
c. Class III
d. Class IV
a. Class I
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51.972 = ____ to two decimal places.
A. 2499.08 B. 2537.36 C. 2698.88 D. 2700.88
¿Qué tamaño de la tubería de aislamiento puede superponerse al aislante de fibra de vidrio para tuberías de 2 x 1 pulgadas (5,08 x 2,54 cm)?
a. 2 pulgadas (5,08 cm) b. 1 pulgada (2,54 cm) c. 3 pulgadas (7,62 cm) d. 4 pulgadas (10,16 cm)
An APAD CM-813 module does not receive input information from:
A. The high pressure switch B. The low pressure switch C. The ECM fan relay D. The cab thermostat
The time interval between two successive peaks of a sustained sine wave on a Ziegler-Nichols graph is the ____.
A. ultimate gain B. ultimate proportional band C. ultimate period D. all of the above