In a rafter-framed roof, the ____ is a notch cut in the lower edge of the rafter to fit around the top of the wall.
A. ridge board
B. top chord
C. dimension line
D. bird's mouth
Answer: D
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Los cuadros de distribución instalados en teatros y lugares similares deben ser de tipo _____ y cumplir con NEC® Artículo 408, a menos que se determine que este cuadro califica para el uso como cuadro de distribución para escenarios.
a. totalmente cerrado b. no metálico c. de frente muerto d. de doble aislamiento
In some varieties of wheat, stem length has been reduced, which reduces or eliminates:
a. stunted growth syndrome c. some pests b. lodging d. damage due to drought conditions
Which of the following items is considered to be personal protective equipment (PPE)?
a. Safety glasses b. Hard hat c. Work boots d. All of the above
The three things necessary for combustion are:
A) Fuel, heat, and carbon dioxide. B) Fuel, oxygen, and heat. C) Gas, air, and a burner. D) Air, gas, and a combustion chamber.