En los sistemas de alarma contra incendios direccionables analógicos, el estado de la alarma lo determina(n):
a. el panel de control.
b. los dispositivos de iniciación.
c. los dispositivos de notificación.
d. los dispositivos de comunicación.
a. el panel de control.
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To find effective high-level commanders, the Union
A. took only top graduates of West Point. B. drew on its reserve officer training program. C. relied on the advice of foreign experts. D. did not let politics enter the decision-making process. E. used trial and error.
For hot-water heating systems, insulation is required _____.
a. only on the piping b. on all components c. only on the boiler d. only at the air handling unit
Which of the following is a true statement?
a. Use a whipping motion with E7018 electrodes only. b. Maintain a short arc when running low-hydrogen electrodes. c. When welding vertically, set the amperage at the highest point of its range. d. Electrodes are best kept in bundles laying on a table within easy reach.
A very fast and accurate method of detecting lead based paint on a surface even through several layers of non-lead based paint is accomplished by _________________.