Which Is a Variable

question 84

Multiple Choice

Which is a variable?

• A) age
• B) fine
• C) judge
• D) female

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Definitions:

EGR System

An Exhaust Gas Recirculation System helps reduce nitrogen oxide emissions by recirculating a portion of an engine's exhaust gas back to the engine cylinders.

Air/Fuel Ratio

The ratio of air to fuel in an internal combustion engine, crucial for efficient performance and emissions control.

Scan Tool

A diagnostic tool used to interface with, diagnose, and sometimes reprogram vehicle control modules.

Compression Test

A diagnostic procedure used to determine the condition of an engine's cylinders by measuring the pressure they can produce.