Define ducts.

What will be an ideal response?


Sheet metal or plastic pipes used to carry air in an HVAC system.

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If a truck scale is not available, weight ____________________ can give a rough estimate of a horse's weight.

Fill in the blank(s) with the appropriate word(s).

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A(n) ____ flame has a balance of fuel gas and oxygen. It is the most commonly used flame because it adds nothing to the weld metal.

A. neutral B. carburizing C. acetylene D. oxidizing

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The space left between the piston and the valve plate of a reciprocating compressor when the piston is at the top of the cylinder is called:

A) The bore. B) The stroke. C) The clearance volume. D) The mechanical allowance.

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The area of a circle is approximately equal to 0.7854 x D2, where D represents the length of the diameter of the circle.  What is the area in square units of a circle whose diameter is 1.15 units expresssed to the nearest hundredth.

What will be an ideal response?

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