Purlins Are Used in a Double Roof to Support

question 6

Multiple Choice

Purlins are used in a double roof to support

• A) The ceiling joists
• B) The hangers
• C) The binders
• D) The ridge board
• E) The rafters

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Definitions:

White Blood Cells

Cells of the immune system involved in defending the body against both infectious disease and foreign materials.

Arteries

Blood vessels that carry oxygenated blood away from the heart to various parts of the body.

Veins

Blood vessels that carry blood towards the heart, typically oxygen-depleted, except for the pulmonary and umbilical veins.

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