An arc-quenching device is used to ensure ____.
a. better extinguishing action
b. better contact
c. longer contact life
d. more powerd. more power
c. longer contact life
Trades & Technology
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A jack arch is supported on steel angle irons if the opening is _____ long.
A. less than 2' B. more than 2' C. between 1' and 2' D. more than 1'
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____ is lightweight, having a specific gravity of only 2.7 times that of water and approximately one-third that of steel.
A. Tin B. Lead C. Aluminum D. Bauxite
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List various attributes that determine the sustainability of a building product and briefly describe their roles.
What will be an ideal response?
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To speed up evacuation, you should use:
A) Small-diameter, short hoses. B) Large-diameter, short hoses. C) Small-diameter, long hoses. D) Large-diameter, long hoses.
Trades & Technology