What is meant by purging an air conditioning system?

What will be an ideal response?


To remove all of its refrigerant, some oil, and any contaminants

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____________________ traps can be used to monitor moth species whose larvae feed on turfgrass

Fill in the blank(s) with correct word

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The toxicity of a chemical compound is commonly expressed by means of an LD50 (lethal dose) value. This is a statistical estimate of the dose necessary to kill 50% of a population of test species (commonly 10 or more mice or rats) under specific conditions

A. True B. False

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Radiation as a means of preservation of fresh meat is effective in killing certain or all

organisms. However, it is not effective in inactivating the enzymes in meat. A. True B. False

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The view that shows the solid portions and the voids within the object are known as

a. isometric view. b. orthographic view. c. standard view. d. sectional view.

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