As the voltage from the O2 sensor increases in response to a rich mixture, the ____________________ decreases, which means injector pulse width is shortened

Fill in the blank(s) with the appropriate word(s).


short term fuel trim

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Which of the following is true regarding job-site warnings?

a. Anyone working on a job site has access to restricted areas. b. You may ride on a load as long as it is solid and secure. c. Comply with OSHA requirements in hard hat zones. d. Accident prevention signs apply to trainees only.

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The cellular glass rigid insulation ____ offers the greatest termite and rodent resistance of any insulation material.

A. Styroglas® B. Bioglas® C. Celluglas® D. Foamglas®

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____ on the east and west help shade from hot sun year round and can provide windbreaks in cold climates.

A. Angiosperms B. Broadleaf trees C. Deciduous trees D. Evergreens

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Safety glasses, safety goggles or a face shield are required when workers are exposed to which of the following?

A. Flying particles B. Molten metal C. Liquid chemicals D. All answers are correct

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