A flat-bottomed hole that provides clearance for the head of a screw, bolt, or pin is
A. A spotface
B. A reamed hole
C. A counterbore
D. A through hole
Answer: C
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Section lines, which are a form of ____, are used to identify areas on the section view that are solid on the original whole object.
A. shading B. cutting C. viewing direction D. full section
A rectangular building with a near-flat roof is acted upon by wind at right angle to one of the walls. Which of the following envelope surfaces will be acted upon by positive (toward-the-surface) pressure and which envelope surfaces will be subjected to suction (negative pressure)?
Windward wall Leeward wall Side walls Roof
What are two major disadvantages to degradable plastics?
What will be an ideal response?
The function of a damper in an air distribution system is to _____
a. distribute air uniformly b. add moisture to the air c. control and balance air flow d. compensate for duct leakage