Tropical soils tend to be low in fertility because frequently the parent material of tropical soils is:
A) granite. B) limestone. C) igneous rock. D) shale.
A
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A welder can determine preheat, interpass or postheat temperature by:
A) Measuring the distance from the weld that his crayon will melt B) Using a crayon to get the right color in the weldment C) Using a temperature-indicating crayon D) None of the above
Which would be a good choice for an office?
A) Direct, high level lighting from the ceiling. B) Semi-indirect lighting from the ceiling. C) (A) supplemented with task lighting. D) (B) supplemented with task lighting.
What two functions does the evaporator of a domestic refrigerator perform?
A. Filters and cools the air. B. Absorbs and dissipates heat. C. Humidifies and cools the air. D. Dehumidifies and cools the air.
What combination of symptoms only occurs on a unit with an inefficient compressor?
a. Low superheat and high subcooling b. Low suction pressure and high head pressure c. High suction pressure and low head pressure d. High suction pressure and high head pressure