Two technicians are discussing variable valve timing. Technician A says that changing the exhaust valve timing helps reduce exhaust emissions. Technician B says that changing the intake valve timing helps increase low-speed torque. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
C
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Skim milk contains less than _____ percent of milkfat
a. 0.5 c. 0.7 b. 0.6 d. 0.8
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?The unit of measure of electrical flow is ____________.
A. ?Volts B. ?Amps C. ?Watts
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We often turn the fan on in summer to help us cool. Explain how a fan makes us feel cooler in the summer. Also explain why some people use ceiling fans also in winter.
What will be an ideal response?
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Compared to reciprocating compressors, centrifugal compressors
A) Can move a larger volume of refrigerant B) Can operate at higher compression ratios C) Can work effectively on smaller systems D) Can operate against higher head pressures
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