To provide a tapered hole for a flat head screw, use a:
A) Countersink B) Center drill C) Taper reamer D) Counterbore
A
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In the AWS specification for carbon steel-covered arc electrodes, a 2 to the right of the tensile strength indicates the following welding position(s): ____.
A. flat, horizontal, overhead, and vertical-down B. all positions flat, horizontal, vertical, and overhead C. flat only and is no longer used D. horizontal fillets and flat
Describe how datum precedence is established.
What will be an ideal response?
Each day, a weather forecaster predicts whether or not it will rain. For 80% of rainy days, she correctly predicts that it will rain. For 90% of non-rainy days, she correctly predicts that it will not rain. Suppose that 10% of days are rainy and 90% are non-rainy.
a. What proportion of the forecasts are correct? b. Another forecaster always predicts that there will be no rain. What proportion of these forecasts are correct?
The R-value of a single glass sheet, including the film resistances, is approximately
A) 2.0. B) 4.0. C) 1.0. D) 3.0. E) 0.