Which of the following unit clearances is typically the largest?
A) A 6-inch clearance from all combustibles on all sides
B) Service clearance
C) A 12-inch clearance from all items that can be damaged by the strong magnetic force field generated by the furnace
D) Clearance for the vent
B
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Which basic principle is one that influences how all HVACR systems work?
A) Pressure affects boiling point and evaporation in an unpredictable way, so it must not be considered in HVACR equipment. B) A decrease in pressure increases the boiling point of liquid, the temperature at which a liquid turns to a gas. C) An increase in pressure can lower the boiling point of a liquid and change the temperature at which it turns to a gas. D) An increase in pressure can increase the boiling point of a liquid, the temperature at which a liquid turns to a gas.
OBD II systems are highly efficient and only illuminate the malfunction indicator light (MIL) when an emissions failure has occurred that will raise emission levels 50 percent above the FTP levels.
Answer the following statement true (T) or false (F)
The amount of feed that cattle will consume is related to:
A. feed palatability B. weather C. feed processing D. all answers are correct
When leaning an extension ladder upon a structure and the fly section rises above the top edge of the structure, the ladder must extend above the structure not less than ____, measured from the highest point of contact.
A. one foot B. two feet C. three feet D. six feet