Which gas can be used an indicator of a rich condition?
A. Carbon monoxide (CO)
B. Oxygen (O2)
C. Carbon dioxide (CO2)
D. Hydrogen (H)
Answer: A
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The southern painted turtle is dark in color with yellow stripes along its head and an orange-yellow stripe running down the center of its ____________________
Fill in the blank(s) with correct word
When adding refrigerant in vapor form to an operating refrigeration system, the refrigerant must be added to the low-pressure side of the system.
Answer the following statement true (T) or false (F)
Foundation brakes are also called ______
A) Regenerative brakes B) Base brakes C) Anti-lock brakes D) Any of the above
In the event of a fire, fire dampers prevent oxygen from feeding the fire by:
A) Spraying suppressant foam. B) Limiting the amount of outside air to 10 percent. C) Closing off the outside air supply completely. D) Removing all oxygen from the space.