Variable Valve Timing Is Used to ________

question 21

Multiple Choice

Variable valve timing is used to ________.

• A) increase engine performance
• B) reduce exhaust emissions
• C) reduce engine wear
• D) Both A and B

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Definitions:

Recessive Gene

A gene that produces its characteristic phenotype only when its allele is identical, otherwise being masked by the effects of a dominant gene.

Temperament

An individual's innate disposition or behavioral style and characteristic emotional response.

Chess and Thomas

Researchers known for their work on temperament, particularly identifying three basic types of temperament in infants: easy, difficult, and slow-to-warm-up.

Wear-and-tear Theory

A theory of aging that suggests that the body, like any machine, gradually wears out due to use over time.