When should a V-belt pulley be changed?

A. when the sides are shiny
B. when the sides become dished out
C. every three months
D. once a year


Answer: B

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The two-fighter shoulder can be used with extension ladders up to ____ long.

a. 24 ft b. 35 ft c. 30 ft d. 40 ft

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

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