Which of the following is true of making high-quality welds?
A. It is affected by the weather.
B. Hydrogen entrapment ensures the weld will be high quality.
C. Evaporating moisture helps prevent porosity.
D. Humidity draws moisture out of the weld zone.
Answer: A
You might also like to view...
In vacuum-bag processing, if a smooth surface is required on the exterior of a boat hull, a female mold would be selected, whereas a male mold would probably be selected for a ____. ?
A. ?sink B. ?helicopter blade C. ?automobile hood D. ?bowling ball
When using power tools, never engage the _____
a. locking spring b. booster c. bit shank d. trigger lock
Commercial and industrial refrigeration systems:
A) Are only used in production facilities. B) Refer to retail food and cold-storage equipment and facilities. C) Are used only in supermarkets. D) Use three-phase equipment only.
A Dutch hip is started by first drawing a(n) ____.
A. overhang B. cornice C. fascia D. hip roof