Which of the following are methods of controlling the temperature inside the vehicle cab?
A. Water-valve control system
B. Blend air system
C. Supplemental heating and cooling systems
D. All of the above
Answer: D
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In polymerizing polystyrene from styrene monomers, the monomer is dissolved in about 80 percent ____.?
A. ?water B. ?formaldehyde C. ?benzene D. ?acetaldehyde
Which crop is a hardy, cool-weather crop that is able to withstand winters in the southern region?
A) Beets B) Lima beans C) Corn D) Spinach
?What is the maximum frequency of porosity that is allowed for a visual inspection?
A. ?1 per inch (25 mm) B. ?1 per 2 inches (50 mm) C. ?1 per 3 inches (75 mm) D. ?1 per 4 inches (100 mm)
If the dry-bulb temperature is 93°F and the wet-bulb temperature is 60°F, what is the specific volume of the air?
A. 14.0 ft3/lb B. 14.0 lb/ft3 C. 10 lb/ft3 D. 10 ft3/lb