Which of the following is a key component of a visual inspection?
A) Check that the fan switch is on.
B) Check that the water flow is within manufacturer's guidelines.
C) Check that all wires have mechanical strain relief.
D) Check that the power button is on.
C
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Flexible liners offer what advantage over rigid liner pools?
a. greater pool depth b. wider pools c. more level edge d. more choices of shapes
Why is some slope, even if slight, important to proper lawn construction?
What will be an ideal response?
Name two advantages of raising geese and ducks
What will be an ideal response?
How does soot accumulation on the inside of the heat exchanger affect system efficiency?
A) The soot increases the heat exchanger internal resistance, thereby increasing efficiency. B) The soot provides extra fuel during the high-fire stage, thereby increasing efficiency. C) The soot acts like an insulator on the inside of the heat exchanger, thereby increasing efficiency. D) The soot acts like an insulator on the inside of the heat exchanger, thereby reducing efficiency.