23 × 49 =
A) 1,007 B) 1,027 C) 1,127 D) 1,117
C
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Stolonizing is only done in small areas that need to be planted
Indicate whether the statement is true or false
Which of the following statements about soil erosion is not true?
A) Less than 20 percent of the total soil erosion in the United States comes from croplands. B) Soil erosion losses per hectare of cropped land are higher in Asia and Africa than the United States. C) Downstream off-site costs of erosion are often higher than those in upstream fields from which the soil came. D) The rate of soil erosion loss in the United States declined from 1980 to 1995. E) Soil erosion losses of potassium exceed those of nitrogen and phosphorus.
Spiral fluted taps are used:
A) To cut oversized threads B) To cut undersized threads C) To tap deep blind holes D) Because they tend to push chips ahead of them
Three resistors are in series across an unknown voltage source. The voltage across R1 is 6 volts, the voltage across R2 is 12 volts, and the voltage across R3 is 18 volts. The source voltage is
A) 18 V B) 6 V C) 36 V D) 12 V