How much effort is typically required to turn the steering wheel on vehicles with power steering?
A) 0.5-1.5 lbs. B) 2-3.5 lbs. C) 5-7 lbs. D) 10 lbs. or more
B
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____ elevators are used mainly for low-rise installations up to six stories.
A. Freight B. Hydraulic C. Electric D. Residential
Una regla general para la construcción cavidades en la viga maestra es que la cavidad debe ser, al menos, _______ más ancha que la viga maestra y la viga maestra debe tener, al menos, _______ de apoyo en el muro.
a. 2"; 4" (5; 10 cm) b. 1"; 4" (2.5; 10 cm) c. 2"; 5" (5; 12.7 cm) d. 3"; 5" (7.6; 12.7 cm)
Which of the following square junction boxes must be used if there is one 6" conduit and two 4" conduits entering on one side of the box and exiting at a 90° angle on another side of the box? (Assume the conductor size is No. 4 AWG or larger, but operating at less than 1,000V.)
a. 24" b. 30" c. 36" d. 44"
A stair with a total rise of 7?-7? and a total run of 9?-0?, with the stairwell header used as the last riser, requires
_____ treads with a _____ unit run. A) 11 treads; 9? wide B) 11 treads; 9-1/2? wide C) 12 treads; 9? wide D) 12 treads; 9-1/2? wide