As a general rule, for every ____ lower in temperature, the shelf life of a particular food is increased by two to five times over what it would be at room temperature
a. 20°F c. 15°F
b. 25°F d. 10°F
A
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____ are comprehensive, precisely detailed drawings prepared for use by shop workers in fabricating precast concrete products and the metal connectors they contain.
A. Engineering drawings B. Shop drawings C. Engineer's sketches D. Checkprints
Which of the following overcurrent protection devices would be appropriate for an air-conditioning condensing unit whose rating plate says MAX FUSE or HACR CIRCUIT BREAKER 35 AMPS?
A) A 35 A HCAR circuit breaker B) A 30 A time delay fuse C) A 35 A circuit breaker D) No fuse or circuit breaker is necessary; but if one is used, it cannot exceed 35 A.
The ozone layer is in which of earth's atmospheric layers?
A) Mesosphere B) Stratosphere C) Thermosphere D) None of these is correct
More than one evaporator coil circuit is used when ____.
A. the evaporator is located outside the conditioned area B. there would be excessive refrigerant pressure drop in the coil circuit C. a distributor would not be practical D. a slant coil is at an angle more than 60°