La iluminación en riel en una pared debe instalarse por lo menos _____ encima del suelo a menos que esté protegido o sea un riel de tipo de baja tensión.
a. 5' (1,52 m)
b. 6' (1,83 m)
c. 8' (2,44 m)
d. 10' (3,04 m)
a. 5' (1,52 m)
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Al utilizar alfombrillas de soporte para sostener una grúa sobre orugas, ¿cuánto se debe extender la alfombrilla más allá de los extremos y los bordes de los carriles de la grúa?
a. Al menos dos pies (0,6 m) b. Al menos cuatro pies (1,21 m) c. Al menos seis pies (1,82 m) d. Al menos ocho pies (2,43 m)
Explain what embodied energy in a building product means.
What will be an ideal response?
To be classified as a conservation tillage practice, a system must leave at least what portion of the soil surface covered with plant residues?
A) 50% B) 40% C) 10% D) 20% E) 30%
Two technicians are discussing variable displacement piston compressors. Technician A says that the wobble plate is moved to the high-angle position for maximum output when the cooling load is high. Technician B says that the wobble -plate angle is controlled by the pressure in the crankcase of the compressor. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians
D) Neither technician