Which of the following is a cause of leakage?
A. Wear
B. Corrosion
C. Damage from an external source
D. All of the above
A. Incorrect. Causes of leakage include corrosion (internal or external), erosion (usually internal), vibration, wear (external), and damage from an external source (for example, impact from something striking the pipe).
B. Incorrect. Causes of leakage include corrosion (internal or external), erosion (usually internal), vibration, wear (external), and damage from an external source (for example, impact from something striking the pipe).
C. Incorrect. Causes of leakage include corrosion (internal or external), erosion (usually internal), vibration, wear (external), and damage from an external source (for example, impact from something striking the pipe).
D. Correct. Causes of leakage include corrosion (internal or external), erosion (usually internal), vibration, wear (external), and damage from an external source (for example, impact from something striking the pipe).
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