Since glass is basically inert, what effects of certain environments are not a problem with optical communications?

A. Shrinkage
B. Corrosion
C. Warping
D. Expansion


B

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Bubbles in the sight glass always indicate refrigerant shortage.

Answer the following statement true (T) or false (F)

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The texture of the soil refers to the ____ of the individual soil particles

a. Shape c. Carbon content b. Absorption level d. Size

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Female ferrets are seasonally polyestrous and may have two litters a year

A. True B. False

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The first step to solving a problem is to _____.