When used as pure gases for welding ferrous metals, ____ may produce an erratic arc action, promote undercutting, and result in other flaws.

A. oxygen
B. carbon dioxide
C. active gases
D. argon and helium


Answer: D

Trades & Technology

You might also like to view...

In Figure 17-7, explain why Ti-202D is reading 205ºF.

What will be an ideal response?

Trades & Technology

The House of Representatives decided the 1824 presidential election when

A. no candidate received a majority of the vote in the Electoral College. B. William Crawford suffered a stroke and was forced to drop out of the race. C. the House was forced to do so by "King Caucus." D. the Supreme Court declined to hear a case brought by Andrew Jackson contesting the electoral results. E. widespread voter fraud was discovered.

Trades & Technology

Before installing a ceiling, you must reference the MEP drawings to _____.

a. make certain that all ceiling penetrations are accounted for b. be sure the room dimensions are correct c. identify the materials required for the installation d. check that construction drawings are the latest version

Trades & Technology

More students enrolled in Agricultural Education live in urban/suburban areas than in rural areas

Indicate whether the statement is true or false

Trades & Technology