Soot accumulation on the heat exchanger is:
A) Not possible with a gas furnace.
B) A natural protective layer for the inside of the heat exchanger.
C) Caused by incomplete combustion.
D) Normal over a period of years.
C
You might also like to view...
The United States joined its allies in the Persian Gulf War in order to
A. regain control of the Middle East oil supply. B. roll back Iraq's invasion of Kuwait. C. demonstrate that the U.S. military could conduct a major ground war thousands of miles from its home bases. D. support Israel against the growing threat from the Arab states. E. guarantee a permanent U.S. naval presence in the Middle East.
When animals are working, they sweat more and require extra salt to make up for the salt being lost
through sweat.
Indicate whether the statement is true or false.When a distributor cap is cracked, a(n) ____________________ often forms along the crack.
Fill in the blank(s) with the appropriate word(s).
Which law states that the deflection of a spring is directly proportional to the applied force?
A) Halderman's law B) Newton's law C) Hooke's law D) Pascal's law