List three reasons why dogs and cats are popular as companion animals
What will be an ideal response?
any three of the following: animal's ability to form social bonds with humans, can be house trained, large enough to interact with and small enough to fit into a house, animal's ability to express itself
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What is a material that forms a barrier to weeds and keeps down erosion?
a. shade cloth c. landscaping cloth b. weed plastic d. polyethylene
To avoid falling, when working above a sheetrock ceiling technicians should:
A) Walk quickly whenever it is necessary to walk directly on the sheetrock. B) Step only on the ceiling joists. C) Step only on the sheetrock between the ceiling joists. D) Walk slowly whenever it is necessary to walk directly on the sheetrock.
The human ear is most sensitive to sounds at which of the following frequencies?
A) 63 Hz. B) 1000 Hz. C) 500 Hz. D) 250 Hz.
A stub end is used with a _____ flange.
a. weld neck b. lap-joint c. socket weld d. slip-on