When the driver depresses the brake pedal of the typical truck with air-over-hydraulic brakes, which of the following occurs?
A. hydraulic pressure actuates the hydraulic booster assemblies
B. hydraulic fluid flows through the quick release valves
C. modulated air pressure actuates pneumatic booster assemblies
D. modulated hydraulic pressure actuates the pneumatic booster assemblies
Answer: C
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The collared peccary is a pig-like creature closely related to the wild boars of the west
a. True b. False Indicate whether the statement is true or false
List five of the reasons why animal health drugs are used
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1.During the rough-in wiring phase, an electrician always installs cable through floors or ceilings, which provides shorter routes than do perimeter walls. 2.The electrician can incorporate waste from the rough-in and trim-out wiring phases into the jobsite-recycling system. 3.Type AC cable installed in thermal insulation must have conductors rated at 90°C (194°F). 4.Most engineered I-beams come from the manufacturer with perforated knockouts that allow an electrician to remove the knockout and install cables through the holes. 5.Type NM and Type UF cables must have their cable sheath extend into nonmetallic boxes and beyond any cable clamp at least 1/2 inch (6 mm).
Which of the following statements about ammonia as a refrigerant is true?
a. Ammonia is slightly less efficient in heat transfer than halocarbon refrigerants. b. Ammonia costs more than other common refrigerants. c. Ammonia is poisonous and must be handled with extreme care. d. Ammonia piping cannot be constructed from copper.