____ lighting systems project most of their light down, with only a very small percentage projecting upward to light the ceiling.
A. General-diffuse
B. Indirect
C. Semi-indirect
D. Semi-direct
Answer: D
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Which of the following is NOT a type of frame construction?
a. balloon b. prestressed c. platform d. braced
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Most laser welding and cutting operations use a solid state laser, and most drilling operations use a gas laser.
Answer the following statement true (T) or false (F)
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Before beginning work with concrete forms, you should do stretching exercises to minimize the potential for
_____. a. leg cramps b. strains or sprains c. bruises and contusions d. muscle spasms
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When using the stair-stepping method to install three-tab shingles, as described in the text, how many courses of shingles do you run before starting again with a full shingle?
A) 1 B) 2 C) 3 D) 4
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