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When troubleshooting a residential heating system, the technician reads 24 volts at the gas valve on a call for heat, but the gas valve does not energize. What would be the most likely problem?
Abnormal Ringing
Unusual or persistent noise heard in the ears, often referred to as tinnitus.
Blood Sugar
The concentration of glucose present in the blood, significant in the diagnosis and management of diabetes.
Aldosterone
A hormone produced in the adrenal glands that acts on the kidney. It causes the body to retain sodium and excrete potassium. Its role is to maintain blood volume and pressure.
Insulin
A hormone produced by the pancreas that regulates blood sugar levels by facilitating the uptake of glucose into tissues.
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