____ for concrete shall consist of natural sand having clean, hard, sharp, uncoated grains free from injurious amounts of dust, lumps, soft or flaky particles, shale, alkali, organic matter, loam, or other deleterious substances.
A. Coarse aggregates
B. Portland cement
C. Fine aggregates
D. Reinforcement
Answer: C
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Which of the following transfer heat most efficiently to the engine coolant?
A. parent bore B. dry liners C. wet liners D. oversized dry liners
A(n) ____________________ circuit is one that is being supplied with electrical energy.
Fill in the blank(s) with the appropriate word(s).
The statement that "Animals provide stability to our economy" means that they:
A. consume grain, thus enhancing that economy. B. protect grain cropland from erosion. C. return energy-rich animal waste to the soil. D. are marketed in greater numbers in years when feed supplies are low, thus reducing the risk of food shortage, and their numbers are increased when feed supplies are abundant.
A majority of all the food and fiber products produced in the United States are grown using ____________________ and pest controls
Fill in the blank(s) with correct word