When steel is exposed to moisture and air, ____________________ occurs

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


ANS: rust

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The averag?e of $252.48, $186.27, $191.99, $338.65, and $318.41 is:

A. ?$214.63 B. ?$257.56 C. ?$321.95 D. ?$1,287.80

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When trees are too crowded, they are more subject to insect and disease problems than healthy trees

Indicate whether the statement is true or false

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When steel wool is used to clean copper tubing, it should be _____

a. No. 00 b. No. 01 c. No. 02 d. No. 03

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Although different in terms of technology, industrial-scale hot water systems operate on the same basic principles as residential systems.

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

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