To clean glass blocks laid in mortar, use ______ .

A. acid solutions
B. alkaline materials
C. wire brushes
D. damp sponges


Answer: D

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A junction box typically located at the PV array location where two or more PV source circuits are connected together is called a(n) ____________________ box.

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

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Each side of the "perfect" Harlequin has a different pattern

Indicate whether the statement is true or false

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Payments under the marketing loan program are decoupled

Indicate whether the statement is true or false

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All horizontal pipes should be

A. perfectly level B. sloped up slightly in the direction of flow C. sloped down slightly in the direction of flow D. none of the above

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