For treatment of the maxillary arch, the dental light is ____________
a. raised and the beam directed downward
b. lowered and the beam directed upward
c. raised and the beam directed upward
d. lowered and the beam directed downward
b
RATIONALE: For treatment of the maxillary arch, the dental light is lowered and the beam directed upward.
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Which of the following statements regarding gabled rigid frames is MOST accurate?
A) The top ridge of a gabled rigid frame is designed as a semi-rigid joint. B) The vertical members of a gabled rigid frame are designed as rigid joints. C) Structures with gabled rigid frames are used for the construction of two-story industrial buildings. D) Gabled rigid frame structures must be braced diagonally.