The movement of water down through the soil is called ____________________

Fill in the blank(s) with correct word


percolation

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The dead center and two cutting lips should be the last part of a twist drill to touch the metal being

bored.

Indicate whether the statement is true or false.

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The ______________ creates much less pressure drop through the valve than the _____________ and is a much better application where excess pressure drop is a concern.

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

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When a manual service valve is back seat cracked:

A) Both the service port and the line are open to the system. B) Both the service port and the line are closed to the system. C) The service port is open and the system is closed to the line. D) The service port is closed and the system is open to the line.

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Which type of chiller is more likely to freeze the tubes if charged or recovered improperly

A) flooded chillers B) screw chillers C) absorption chillers D) direct expansion chillers

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