While having a discussion, Technician A says that dry black soot at the exhaust pipe indicates an overly rich air-fuel mixture. Technician B says that it indicates oil consumption. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer: A
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Soil in urban areas may be polluted with lead
Indicate whether the statement is true or false.
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An example of a power consuming device would be a(n) ____ while an example of a non-power consuming device would be a(n) ____.
A. single-pole single-throw switch, light bulb B. light bulb, electric motor C. electric motor, light bulb D. light bulb, single-pole single-throw switch
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Most of the salmon consumed in the United States comes from ocean fishing or:
a. Spain c. Norway b. Canada d. Finland
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The direction of rotation of a DC motor is changed by reversing the __________.
A. brush position B. supply polarity C. field and armature connections D. field or armature connections
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