Which of the following fertilizer nutrients is NOT obtained from mining?
a. phosphorus c. potassium
b. nitrogen d. calcium
B
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Dimensioning for pipe layout components is accomplished by the addition of ____________________ and notes to the drawings.
Fill in the blank(s) with the appropriate word(s).
How many degrees are in three-quarters of a circle?
A. 90 B. 270 C. 360 D. 450
What is one method of cooling a transformer?
A. place in a tank of refrigerant B. place in an air-conditioned room C. place in a tank of water D. place in a tank of oil
A water source system that gets its water from a well and does not reuse the water
A) is called a quasi-closed loop because it still uses a circulating pump B) Is an open loop system C) Is a closed loop system D) is considered a hybrid between an open and closed loop system