What environmental control measure may be constructed of concrete or simply earthen pits dug out and lined with a heavy rubber liner?
A. Dike
B. Settling pond
C. Landfill
D. Sand absorption
A. Incorrect. Dikes are containment devices (earthen berms, metal or concrete walls) built around a piece of equipment to contain any liquids should the equipment rupture or leak.
B. Correct. Settling ponds may be constructed of concrete or simply earthen pits dug out and lined with a heavy rubber liner.
C. Incorrect. Landfills are human-made or natural pits, typically lined with an impermeable, flexible substance (such as rubber) or clay.
D. Incorrect. Environmentally harmful liquids must be absorbed by sand or sawdust and placed in drums before disposal.
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In the zoned system, how many motorized valves does each circuit contain?
A) 1 B) 2 C) 3 D) 4
For the person riding a pleasure trail horse, the western saddle is recommended.
Answer the following statement true (T) or false (F)
The three general classes of fittings are screwed, welded, and ____________________.
Fill in the blank(s) with the appropriate word(s).