Describe some of the advantages and disadvantages of drainage systems

What will be an ideal response?


Some of the advantages are improved soil workability that allows earlier and more timely field operations; increased productivity of crops due to increase oxygen; reduced incidence of fungal crop disease; decreased methane production; and removal of excess soil salts.

Disadvantages include increased nutrient and pesticide leaching; loss of wildlife habitat; installing tile can be costly and is highly regulated; increased soil organic matter loss; and increased flooding in rivers to which drainage flows.

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Full floating piston pins are retained by ________.

A) Lock rings
B) A drilled hole with a roll pin
C) An interference fit between piston and piston pin
D) An interference fit between rod and piston pin

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Explain the difference between adding vectors that are in a straight line and those that are not in a straight line.

What will be an ideal response?

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Technician A says that all tires sold for passenger vehicle use must be approved by the DOT. Technician B says that the DOT code will indicate the build date of the tire. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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The hydrostatic test pump is normally connected to the piping system by _____ connections coming out of the discharge side of the pump

A) socket-welded B) flanged C) screwed D) butt-welded

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