La irritación de la piel que puede ocasionar la exposición al cemento se denomina _____.
a. escoriación por cal
b. reacción puzolana
c. dermatitis del cemento
d. reacción al cemento
Answer: C
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____________________ corrosion is an electrochemical process that causes corrosion where two dissimilar metals touch.
Fill in the blank(s) with the appropriate word(s).
The first major transportation project in the United States, which ran 62 miles and was completed in the 1790s, that proved to be a stimulus for western economic developments was the
A. Baltimore and Ohio Railroad. B. National (Cumberland) Road. C. Erie Canal. D. St. Lawrence Seaway. E. Lancaster Turnpike.
Why would a temperature-differential defrost system not complete the defrost cycle?
A) There is a refrigerant undercharge. B) The fan blows warm air across the coil. C) There is too much heat available during defrost. D) The system defrosts too frequently.
The condenser in a refrigeration system ____.
A. desuperheats the vapor from the compressor B. condenses the vapor from the compressor C. subcools the liquid refrigerant before it leaves the condenser D. all of the above