Technician A says that an advantage of EHIs over standard hydraulic injectors, is the absence of injection lag. Technician B says that EHIs are capable of multipulse injections within a single cycle. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
Answer: C
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Selective catalytic reduction (SCR) uses urea injection to reduce ________ emissions
A) CO2 B) NOx C) H2O D) CO
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List and describe two common types of gas valves.
What will be an ideal response?
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The relationship between resistance and temperature of a thermistor is relatively __________.
A. linear B. nonlinear
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The component that turns the oil burner and blower on and off in response to external commands is the
_____. a. ignition transformer b. thermostat c. primary control d. magnetic oil flow valve
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