When using a torch to braze a fitting, the technician should use the proper size ____, wear ____, and always have a ____ nearby.
A. copper pipe, insulated boots, fire extinguisher
B. torch tip, insulated boots, protective fire shield
C. torch tip, safety glasses, fire extinguisher
D. acetylene tank, safety glasses, bucket of water
Answer: C
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Although it is general practice to take measurements from the outside wall to the edge of openings, it is considered more accurate to measure to the center of openings than to the edge of the jambs.
Answer the following statement true (T) or false (F)
Calculate the ultimate BOD of the mixed river and sewerage stream.
The Ganges River, shown in Figure 4.66, has an annual average flow rate of 12,105 m3/s. The average temperature of the Ganges River was reported to be 24.6ºC. The Ganges has become contaminated with raw sewerage and industrial waste so that the dissolved oxygen in the river upstream of sewerage discharges is 4.6 mg/L. Suppose that the raw sewerage that is untreated flows into the Ganges at a rate of 460 m3/s, the temperature is 25ºC, and the dissolved oxygen in the sewerage stream is completely depleted (i.e. DO = 0). How would you develop a plan for improving water quality in the Ganges River? What will be an ideal response?
Why is backseating a manual service valve when installing a gauge manifold necessary?
A) So that the middle leg is opened B) So that coolant is not lost C) So that there is no pressure on the gauge port D) So that no gauge ports are opened
Which of the following sheet sizes is 420x297mm?
A. A0 B. A1 C. A2 D. A3 E. A4