Hard-drawn copper tubing is harder than soft tubing because _____.
a. it has been annealed
b. it has other metals combined with the copper
c. of the drawing process used to manufacture it
d. it has been through a special tempering process after forming
c. of the drawing process used to manufacture it
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The most relevant standard that applies to air-conditioning technicians is:
A) ANSI standard "B." B) AHRI standard "A." C) ACCA standard "C." D) ASHRAE standard "A."
Which one of these characteristics is found in a common-collector amplifier?
A) a very high power gain B) a current gain of one C) a high input resistance D) a low input resistance
Read the voltmeter in the accompanying figure to the nearest tenth of a volt. The switch is set to 24.
A. 27.0 B. 27.6 C. 28.2 D. 28.8
Describe the difference between (a) reinforcing steel and prestressing steel, (b) formwork and shores, (c) formwork and flying forms, and (d) shoring and reshoring.
What will be an ideal response?