La instalación de una caja en una losa de concreto se considera un lugar:

a. húmedo.
b. seco.
c. mojado.
d. a prueba de intemperie.


c. mojado.

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Which of the following operates at the highest temperatures?

A. exhaust valves B. intake valves C. solid lifters D. rockers

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Sketch in plan a hollow metal door frame and its junction with (a) a metal-stud wall and (b) a CMU wall.

What will be an ideal response?

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Which of the following is important when lifting a heavy object?

A. Keep weight close to body. B. Use your leg muscles. C. Keep your back straight. D. All of the above

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A bag of masony cement holding a volume of 1 cubic-foot is sufficient for making mortar to lay 100 engineered-size bricks in the running bond pattern.

Answer the following statement true (T) or false (F)

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