The ____ test is used to determine the water and cement content of fresh concrete.
A. slump
B. cement content
C. air-content
D. unit weight
Answer: B
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A container of R-134a tested at a pressure of 115 PSI at an ambient temperature of 75°F. This means ________.
A) That there is sealant in the container B) That there is R-12 in the container C) This is normal pressure for R-134a at that temperature D) Air is in the refrigerant
Many factors can affect reproductive efficiency, and therefore the heritability for
prolificacy in farm animals is low. A. True B. False
A bar over a term in a Boolean expression indicates the expression is ________
Fill in the blank(s) with correct word
When terminating a GTAW weld, the crater must be filled to the full cross section of the weld to prevent _____
a. cracking b. overfill c. melt-through d. root fusion