____ require a concrete footing to support them.
A. Walls made of wood
B. Walls made of plastic ties
C. Interlocking block walls
D. Concrete, masonry, and most stone walls
Answer: D
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What is the depth of cutting or plugging provided by most aerators?
a. 1.5 inches c. 3 inches b. 2 inches d. 3.5 inches
Technician A says that when an electronic braking system (EBS) is used on an air brake system, the control circuit is pneumatic and the actuator circuit is electronic-over-electric. Technician B says that when EBS is used at this moment in time in North America, it is required to have full FMVSS-121 redundancy. Who is correct?
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A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
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A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B