____ is the distribution system for forced-air systems.
____ is water that is free from impurities that could cause disease or harmful physiological effects.
____ is hard granular material, such as sand and gravel, that is mixed with cement and water to provide structure and strength in concrete,
____ is an assembly that contains one or more conductors, with or without fiber-optic members, and enclosed in an armor of interlocking metal sheath, or smooth or corrugated metal sheath.
In a(n) ____ system, a circulating pump conveys water from the source, through the piping system, terminal devices, and return piping of the system.
Single-pole, double-pole, two-way, three-way, key-operated, momentarycontact, and maintain-contact are common types of____.
A(n) ____ contains on evaporator, compressor, condenser, and expansion valve.
A{n) ____ is an arrangement of masonry in a pattern to provide a desired architectural effect and/or additional structure.
____ consist of three, four, or five individual layers of asphalt-saturated roofing felt bonded together with hot tar or asphalt.
A(n) ____ is a self-contained heating unit that includes a blower, and heat exchanger or electric heating elements, and controls.
The traditional method of plastering is the ____ -coat method .
A(n) ____ is a heat exchanger that absorbs heat from the surrounding and adds the heat to low-pressure refrigerant liquid.
____ is heavy-gouge wire joined in a grid and used to reinforce and increase the tensile strength of concrete.
A(n) ____ is a movable plate that controls and balances air flow in a forced-air system.
The ____ size is the dimensions of a piece of lumber before it is dried and surfaced.
Thin pieces of natural stone fastened to other masonry or steel framing are called____.
____ pipe is the most common type of plastic plumbing pipe used in residential and light commercial buildings.