Ceiling joists are sometimes brought into alignment with the installation of a ____ across the tops of the joists near the center of the span.

a.ridge board
b.rafter
c.strongback
d.collar tie


ANS: C

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Solder under the insulation is referred to as ____________________.

Fill in the blank(s) with the appropriate word(s).

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Los receptáculos de hospital:

a. son fáciles de identificar porque son completamente verdes. b. superaron pruebas de resistencia mecánica. c. son equivalentes a los industriales. d. sólo se usan en áreas de anestesia de la sala de operaciones.

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The Roslin Institute produced two cloned ____________________ named Molly and Polly, which had been genetically altered

Fill in the blank(s) with correct word

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Symptoms of a __________ indicate that refrigerant may need to be added to the system.

A. system overcharge B. system undercharge

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