Why might it be necessary to reclean the surface of an aluminum AWS SENSE workmanship sample?
A. ?The surface oxides have reformed.
B. ?The surface has become contaminated.
C. ?It has been too long since the surface was cleaned.
D. ?All of the above
Answer: D
You might also like to view...
Proper operation of the rotating equipment like the agitator, mixer, agglomerator, and centrifuge includes: (Select all that apply.)
a. having machine guards in place b. running the equipment at designed speed of rotation c. turning equipment on/off every shift d. starting the process at 100 RPM per hour
The earliest known use of the term Manifest Destiny was in 1845 by
A. John Tyler. B. James K. Polk. C. Ralph Waldo Emerson. D. John L. O'Sullivan. E. Mark Twain.
An example of a flowering bulb is _____
A) coreopsis B) crocus C) black-eyed Susan D) marigold
When a system pumps down, where is the refrigerant stored?
A. receiver B. evaporator C. condenser D. both a and c