The estimator's most useful reference is _____.
a. architectural drawings
b. historical records
c. previous contractual data of subcontractors
d. specific cost of equipment records
b. historical records
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The angle of ____________________ is the angle formed by the meeting of the upper and lower incisor teeth.
Fill in the blank(s) with the appropriate word(s).
Before becoming president of Russia, Vladimir Putin served in which Soviet agency?
a. the KGB b. the Red Army c. the Soviet Air Force d. the Supreme Soviet
Among trees, shrubs and lawns, which are planted last?
A. Trees B. Shrubs C. Lawns D. None of these are correct
The U.S. Department of Agriculture has developed soil-loss tolerance limits (T values) for different soils. Which of the following is the highest T value assigned for most soils in this country (Mg/ha)?
A) 15 B) 2 C) 5.0 D) 11 E) 20