In the alphabet of lines, an area not included in the cutting line view is shown with _____
A) section cuts B) object lines C) break lines D) dimension lines
A
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In ____ dimensioning, all of the dimensions in a given direction originate from a base or datum.
A. data B. location C. chain D. baseline
What measurement is theoretically one ten-millionth of the distance between the equator and either pole?
A. one inch B. one centimeter C. one meter D. one kilometer
Why would a preheat coil be used on the energy-recovery wheel?
A) to prevent moisture transfer to the supply air B) to prevent frost from forming on the wheel C) to warm the exhaust air D) to dry the intake air
Which of the following statements is not true?
a. Leave a gap whenever a hidden line is a continuation of a visible line. b. The front view is usually indicated by the object in its operating position. c. Any one view of a three-dimensional object shows only two dimensions. d. Shading is often used to show depth on a working drawing. e. The depth in the top and side views must always be equal.