One potential safety hazard that all technicians should be aware of when working on an electric furnace is that there are many exposed electrical connections.
Answer the following statement true (T) or false (F)
True
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Materials are toxic if:
A. They react violently with water or other chemicals. B. They burn the skin or dissolve metals or other materials. C. They exceed levels greater than 100 times that in drinking water. D. They release cyanide gas.
Members of this (these) microbial group(s) are responsible for a major proportion of the nitrogen fixed globally in symbiosis with higher plants
A) actinomycetes B) bacteria C) fungi D) A and B E) all of the above
In order to reduce duct leakage, ducts should be sealed with _____
a. mastic b. duct tape c. electrical tape d. paint
Which valve is controlled by the position of the gearshift selector?
A) Manual B) Detent C) Pressure control D) None of these are correct.