Las guías temporales que se usan para sostener un escanti- llón cuando se enrasa el con- creto al nivel adecuado se conocen como _____.
a. viguetas de cimentación
b. rieles
c. guías de enrasado
d. niveladores
Answer: C
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Briefly describe photodiodes.
What will be an ideal response?
Refrigerant oil flow through the liquid line is not a problem because:
A) The liquid line is always piped downhill. B) There is no oil present in the liquid line. C) The oil and refrigerant do not mix, so the refrigerant does not interfere with oil flow. D) The oil mixes with the liquid refrigerant.
The largest source of electric power in the U.S. is
a. solar b. natural gas c. nuclear d. coal e. hydroelectric f. wind
What two pieces of information are necessary to measure the TEV superheat?
A) The evaporator inlet and outlet temperatures B) The liquid line and suction line temperatures C) The valve body temperature and the bulb temperature D) The suction line temperature and pressure