?If a nut turns easily for a few threads on a bolt and then begins to turn hard, what could be the problem?

What will be an ideal response?


The fastener is stretched.

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When an internal engine compression brake is actuated, at what point is cylinder compression dumped into the exhaust?

A. around TDC on compression stroke B. at the beginning of the compression stroke C. at the completion of the exhaust stroke D. gradually throughout the compression stroke

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The air-conditioning process works through a fluid, called a ________ that continuously changes state from liquid to gas and back to liquid.

A) Insulator B) Element C) Conductor D) Refrigerant

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The livestock that primarily depend on 20 percent protein hay are:

a. dairy cattle c. sheep b. horses d. beef cattle

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Which of these is not a chemical used to treat lumber?

a. ACC c. CCA b. ACA d. CAC

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