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What is a key advantage of common rail fuel injection systems?

A. They have lower fuel efficiency.
B. They require more maintenance than traditional systems.
C. They operate at higher fuel pressures.
D. They offer precise control of fuel delivery.

Answer :

Final answer:

The primary advantage of common rail fuel injection systems is that they offer precise control of fuel delivery, leading to improved engine performance and efficiency.

Explanation:

The key advantage of common rail fuel injection systems is option d): They offer precise control of fuel delivery. This technology allows for better control of the vehicle's fuel supply, which can significantly improve engine performance and efficiency. The higher fuel pressures they operate at, option c), can also be an advantage, but the main benefit is the precision of control over fuel delivery.

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