The internal combustion engine used in most cars has an average efficiency of about _______________ percent



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


twenty

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Cooling-only window air conditioners range in size from about 4,000 Btu/h to 24,000 Btu/h.

Answer the following statement true (T) or false (F)

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Technician A says that a proper U-joint inspection can be done with the driveshaft in place on the vehicle. Technician B says that you must remove the driveshaft to properly inspect the U-joints. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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A _____ gearset is one in which any one pinion tooth comes into contact with only some of the ring gear teeth. One revolution of the ring gear is required to achieve all possible gear tooth contact combinations.

A. hunting B. nonhunting C. partial nonhunting D. hypoid

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An EGR valve that is partially stuck open would MOST LIKELY cause what condition?

A) Excessive NOx exhaust emissions B) Ping (spark knock or detonation C) Missing at highway speed D) Rough idle/stalling

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