Technician A says that a vacuum leak can cause a rough idle or stalling. Technician B says that spark knock (ping or detonation) is often caused by a too rich air-fuel mixture or an excessively low engine operating temperature. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
A
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When using a drill press, make sure the workpiece is _____.
a. secured to the table b. free to move c. lubricated d. upside down
A properly limed and fertilized forage crop is the backbone of a successful crop:
a. row c. yield b. selection d. rotation
Farmers have been practicing recycling for a long time by applying ______ to their fields
A) water B) seeds C) extra soil D) manure
What is the relationship between current and voltage in a purely resistive circuit?
A. The current lags the voltage by 90°. B. The current leads the voltage by 90°. C. The current and voltage are 180° out of phase with each other. D. The current and voltage are in phase with each other.