La parte de la escalera marcada con la letra A en la Figura 2 representa _____.
a. un marco
b. un peldaño
c. un ensamblaje para
escalones
d. un soporte de escalón
Answer: D
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Between 6 and 10 months of age, the permanent first ____ (or wolf tooth) erupts. Not all horses have this tooth.
A. incisor B. intermediate C. premolar D. molar
A conductor made out of what material is allowed to carry the most current, assuming that size and insulation type are held constant?
A. copper-clad aluminum B. silicone C. aluminum D. copper
As additional resistors are added in parallel to a parallel circuit, what will happen to the total resistance?
A) Total resistance will increase. B) Total resistance will remain the same. C) Total resistance will decrease. D) Total resistance will only be affected by resistors of equal value.
Typically, the zone control valve not only opens to allow water to flow to the zone, but also turns on:
A) Circulator pump. B) The fan coil unit. C) The blower. D) The boiler.