All switches connected in series must be open before current flows in the circuit.

A(n) ___ is an electric device specifically designed to store a charge of energy.

A ___ lamp is a lamp that produces light from an arc tube.

Trap seal loss is virtually eliminated when a(n) ___ vent is employed since the plumbing system is relieved of negative and positive pressure at every fixture trap.

Cleanouts provide access to an individual vent if a stoppage occurs.

In hydronic heating systems, a circulating pump moves hot water from a boiler through the supply piping system to the terminal devices and back to the boiler.

Tamper-resistant receptacles are installed in bedrooms and are the first device installed in a branch circuit to protect all other devices downstream.

A capillary tube runs from the hot gas discharge line on the ___ to the pilot valve cylinder.

Two common ___ refrigerants are categorized as having the highest ozone-depleting potential (ODP) value and cause great damage to the Earth’s ozone layer when released into the atmosphere.

Refrigerants typically have a low boiling point that allows them to receive heat energy from the substance that needs to be cooled.