When a backing weld or a melt-thru weld is to have a(n) ____________________ finished convex contour, this is indicated by adding the convex contour symbol and the finish abbreviation to the backing, back, or melt-thru symbol.
Fill in the blank(s) with the appropriate word(s).
mechanically
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What color code is normally used to identify an oxygen hose on an oxy-acetylene station?
A. blue B. red C. black D. green
What types of edge preparation are required on part G?
Refer to Drawing Number 750098A on page 115 for the following questions.
The value adopted for the discount rate has a minimal effect on the outcome of the life-cycle costing analysis.
Answer the following statement true (T) or false (F)
Which of the following statements is TRUE about these systems?
A) The R410a system can operate at half the suction line pressure drop of the R-22 system. B) The R-22 system can operate at the same suction line pressure drop of the R-410a system. C) The R-22 system can operate at twice the suction line pressure drop of the R-410a system. D) The R-410a system can operate at twice the suction line pressure drop of the R-134 system.