Why do some synthetic cutting fluids irritate the skin when in prolonged contact?
A) It tends to remove the natural skin oils B) It contains irritating chemicals
C) These fluids are alkali based D) These fluids are acid based
A
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The ____ protects the molten weld pool, the filler rod, and the tungsten electrode as they cool to a temperature at which they will not oxidize rapidly.
A. nozzle B. preflow period C. shielding gas D. postflow period
If the valley flashing is not wide enough for the ____ of the roof, wind-blown water may be forced under the roof covering and run beneath the flashing.
A. hip jack rafters B. pitch C. beams D. valley jack rafters
Size of sensor interface wiring is selected to ________
A) Minimize electrical interference B) Ensure adequate current carrying capability C) Ensure proper length of the wiring D) Prevent it from breaking
Forms for circular piers are made of steel or _____
a. plastic b. laminated plywood c. waterproof fiber d. fiberglass