Los detectores puntuales que contienen una fuente de luz y un dispositivo fotosensible sobre el cual los rayos luminosos NO inciden normalmente funcionan por el principio de:
a. ionización.
b. dispersión de luz.
c. oscurecimiento de la luz.
d. compensación de índice de humo
b. dispersión de luz.
Trades & Technology
You might also like to view...
Our country lies in a temperate zone
Indicate whether the statement is true or false
Trades & Technology
Older R-12 refrigerants turns to deadly phosgene gas if allowed to contact an open flame or an extremely hot metal surface.
Answer the following statement true (T) or false (F)
Trades & Technology
____ should fit snugly against top and bottom plates and are cut to fit tightly around plumbing and electrical boxes.
A. Fascias B. Soffits C. Batts D. Blankets
Trades & Technology
Which type of head works well for driving with a power drill?
A) Round head with straight slot B) Hex head C) Counter-sunk head with straight slot D) Pan head with phillips slot
Trades & Technology