The number of essential materials that make up concrete is _____.
a. three
b. four
c. five
d. six
b. four
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?To what percent of its elastic limit is a bolt usually torqued?
What will be an ideal response?
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La protección mínima contra sobrecorriente que se debe utilizar en circuitos ramales para artefactos pequeños es de:
a. 10A. b. 15A. c. 20A. d. 30A.
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Melting alloy and bimetallic overload relays are designed to _____.
a. trip an alarm signal b. keep the motor operating in the event of a sustained overload c. react to changes in the motor load current d. divert excessive current to prevent overheating
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Rounded stone should be represented using the _____ pattern from AutoCAD.
A. GRAVEL B. AR-SAND C. BRICK D. BRSTONE
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