The welding current used by a transformer welding machine is _____
a. high voltage, low amperage
b. high voltage, high amperage
c. low voltage, low amperage
d. low voltage, high amperage
d
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El revestimiento más usado en calderas y precipitadores es _____.
a. el acero inoxidable b. las chapas con corrugado de 1-1/4 pulgada (3,17 cm) por 0,020 mil (0,50 mm) c. las chapas lisas de aluminio d. la chapa trapezoidal de aluminio
Genetic engineering has increased or improved what three production traits?
What will be an ideal response?
The traffic on the design lane of a proposed four-lane rural interstate highway consists of 40% trucks. If classification studies have shown that the truck factor can be taken as 0.45, design a suitable flexible pavement using the 1993 AASHTO procedure if the AADT on the design lane during the first year of operation is 1000, The pavement structure will be exposed to moisture levels approaching saturation 20% of the time, and it will take about one week for drainage of water. Effective CBR of the subgrade material is 7. CBR of the base and subbase are 70 and 22, respectively, and Mr for the asphalt mixture, 450,000 lb/in2.
pi = 4.2, and pt = 2.5. Growth rate = 4% Design life = 20 years Reliability level = 95% Standard deviation = 0.45 What will be an ideal response?
Which type of flowers require two years to complete their life cycle?
a. perennials c. semiannuals b. annuals d. biennials