Key safety aspects that should be checked during a planned maintenance service call for any combustion appliance include (you may select more than one):
A) CO levels in flue gas and around unit.
B) Combustion air.
C) The presence of CO2.
D) Vent system integrity.
E) Furnace cabinet temperature.
A, B, D
You might also like to view...
Which of the following steep-roof materials has the longest history of use?
A) Clay tile B) Asphalt shingle C) Wood shingle D) Concrete tile E) Slate roofs
If you are unavoidably late for an appointment, you should _____.
a. immediately start work without talking to the customer b. apologize to the customer for your tardiness c. blame your tardiness on the company dispatcher d. ignore the fact that you are late and hope the customer does the same
Which of the following types of excavation methods uses scrapers, dozers, rollers, water trucks, and graders?
A. Site cut-and-fill operations B. Basement-type excavations C. Trench excavations D. Pit and sump excavations
Matter that exists in a hot, ionized state is called plasma
Indicate whether the statement is true or false