List and define six important physical properties of soil
What will be an ideal response?
? Slope—the angle of the soil surface from horizontal.
? Texture—the proportion of sand, silt, and clay.
? Drainage—the natural ability of the soil to allow water to flow through it.
? Flood hazard—the tendency of a given site to be flooded.
? Erosion—the degree to which soil erosion has already occurred on a site.
? Topsoil and subsoil thickness—the depth of the topsoil (A horizon) and the depth of the subsoil (B horizon).
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Secondary control points are usually established on the job site by _____.
a. utility crews b. grading contractors c. carpenters d. inspectors
The bridgewall mark usually found on globe valves indicates _____.
a. the flow direction b. the high-pressure side c. the low-pressure side d. how the seat walls are angled in relation to the inlet and outlet ports
Tech A says bearings pressed onto the axle can be removed with a hammer and a drift punch. Tech B says bearings can be removed by cutting the bearing with an oxyacetylene torch. who is correct?
A. a only B. b only C. both a and b D. neither A nor B
When cooled, the volume of a gas in an unsealed container will _________________________ (expand proportionally, contract proportionally, remain the same) and the pressure will ____________________ (expand proportionally, contract proportionally, remain the same).
Fill in the blank(s) with the appropriate word(s).