Extra-low-carbon stainless steels are less prone to formation of chromium carbides that rob stainless steels alloys of the chromium needed to maintain corrosion resistance
Indicate whether the statement is true or false
TRUE
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Which combustion control closes as soon as the firing cycle is complete and is meant to minimize the loss of residual heat up a chimney?
a. automatic vent damper b. larger burner c. electrical pilot igniter d. none of the above
Which of the following is NOT an effect of soil salt?
a. Reduced soil water availability b. Reduced energy for plant growth c. Accumulations of toxic levels of certain elements in plant tissue d. Root stress e. Soil dryness f. Nutrient imbalances g. Extremely high pH
Mechanical refrigeration that allowed food to be kept cool for an extended period of time was developed in the:
a. Late 1700s c. Late 1900s b. Early 1800s d. Late 1800s
If a silver specimen is annealed for a long time, under conditions favoring the development of grooves along the lines where internal grain boundaries intersect the outer surface of the sample, a groove angle of 139.5° occurs. If the grain boundary energy for silver is 0.790 J/?m2 , what is the energy of the solid?vapor surface?
What will be an ideal response?