Modern residential oil furnaces sense the flames using:
A) Ultraviolet light sensors. B) A thermal sensing stack switch.
C) Flame rectification. D) A cadmium sulfide cell.
D
Trades & Technology
You might also like to view...
The report generated from the time card is called a(n) ___________________, which shows weekly and cumulative labor costs versus budgeted hours and dollars.
Fill in the blank(s) with the appropriate word(s).
Trades & Technology
Distillation purifies liquids
Indicate whether the statement is true or false
Trades & Technology
After combining, grain is clean of residue
Indicate whether the statement is true or false
Trades & Technology
For measuring a journal for out-of-round, measurements should be taken every ________ degrees around the journal
A) 90 B) 260 C) 180 D) 120
Trades & Technology