A curtain wall is typically used in buildings whose structural system consists of a

A) reinforced-concrete frame structure or steel-frame structure.
B) load-bearing masonry wall structure.
C) steel-frame structure or load-bearing masonry wall structure.
D) load-bearing reinforced-concrete wall structure or load-bearing masonry wall structure.
E) all of the above.


A) reinforced-concrete frame structure or steel-frame structure.

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A fuel cell produces electricity from ________ and ________

A) Gasoline; oxygen B) Nitrogen; hydrogen C) Water; oxygen D) Hydrogen; oxygen

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A battery date code sticker indicates D6. What does this mean?

A) It was built the second day of the week (Tuesday). B) The date it was shipped from the factory was April, 2006. C) The battery expires in December, 2002. D) The date it was shipped from the factory was December, 2006.

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Technician A says that a pressure check valve should hold system pressure for at least five minutes after the pump is shut off. Technician B says that a defective check valve could cause long cranking time. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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List three less frequently used lines in the alphabet of lines that are used for more advanced drawings.

What will be an ideal response?

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