Helium has been mixed with ____ to gain the combined benefits of cathode cleaning and deeper penetration, particularly for manual welding.
A. hydrogen
B. argon
C. nitrogen
D. acetylene
Answer: B
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Use the finished drawing from Problem P12–4 to complete this problem. Create three cross sections through the new road and determine the cut and fill. Use the following information for this problem:
Cut three cross sections perpendicular through the road and cut and fill at the following locations: cross section A, 220? along the road centerline from point A; cross section B, 415? from cross section A, or at the widest area of fill; cross section C, 450? along the road centerline from the PI at point B. Locate completed cross sections on separate ANSI C size sheets, one section per sheet. The vertical scale of the cross sections is to be the same as the horizontal scale. The road surface has a slope of 0.02 ft./ft. from the road centerline. The shoulder surface has a slope of 0.06 ft./ft. from the edge of pavement (EOP). Exaggerate the road and shoulder surface slope angle on the drawing for clarity. The road has the following composition: 12?? thick base of gravel (show as dashed line); 6?? thick sand–asphalt hot mix (show as solid line); 1 1/4?? thick asphaltic–concrete surface (show as thick solid line). Draw cross sections with an appropriate scale that allows the drawing, especially the area of cut and fill, to be shown as large as possible on the sheet. Each cross section sheet may have a different scale. Label the centerline of the proposed road, bearings and distances, and location points on the road. Label the road width, shoulder width, road surface and shoulder surface slopes, and the centerline of the road in all cross sections. Label the road composition in all cross sections as local notes or called out on one sheet in general notes, with local note references on each drawing. Indicate cut and fill in cross sections with a note and show the angle of repose symbol and values on each side of the road, along the appropriate slope. Below all three cross section viewing arrow symbols on the base drawing, place a drawing reference in parentheses. For example, section A-A, if shown on sheet number P12–8–02, should have the label (P12–8–02) below one of the viewing arrows. Place a similar cross-reference label on the cross section drawing just below the section name. Use an appropriate graphic pattern to indicate areas of undisturbed Earth only. Place patches of this symbol at angular changes of undisturbed Earth and several places along slopes. Title all cross section drawings HWY. CROSS SECTION. Change the title of original map to HIGHWAY CUT AND FILL. Begin drawing numbers with P12–8–01 on the HIGHWAY CUT AND FILL drawing and continue in sequence with cross sections. Label the sheets as a set, such as 1 of 4, 2 of 4, and so on. Submit drawings plotted to scale on ANSI C size sheets, complete with border and title block.
In overdrive, the direct clutch drives the planetary carrier counterclockwise, causing the long pinions to walk counterclockwise around the held large sun gear.
Answer the following statement true (T) or false (F)
Technician A says that you have to pay a registration fee for each test you take in a session. Technician B says that if you fail a test you have to wait a year before taking that test again. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
This is a covering that is placed over the flue for protection from the elements:
A. chimney liner B. flue C. chimney anchors D. chimney cap E. chimney hood