________ are a type of beam specifically designed to support structural loads and act as an attachment point for other beams
A) Floor joists B) Girders C) Bases D) Floor trusses
B
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El agua fría no puede conectarse con:
a. equipo de manejo de aire. b. serpentines de ventilador de habitaciones. c. unidades de inducción. d. un calentador de agua caliente.
The power switch on a handheld torch must have a _________ as part of the switch.
A. bright color B. smooth finish C. easy pull D. safety guard
What is the difference between a a 90 percent furnace with a sealed combustion system and a typical 90 percent furnace?
A) Sealed combustion units use household vented air for combustion. B) Sealed combustion units require combustion air to be piped in from the outside. C) Sealed combustion units do not produce any combustion products. D) Sealed combustion units may use PVC pipe for venting material.
Mature earthworms have a broad, raised band encircling the body:
A. Behind the head B. Around the mouth C. At the tail D. No answers