Which of the following is true regarding pneumatic tools?
a. They are powered by hydraulic pressure.
b. They have a safety device that prevents the tool from operating unless the muzzle is pressed against a work surface.
c. They are rarely used due to the hazards presented by this type of equipment.
d. They require OSHA certification, including an operator's card that must be carried at all times.
b. They have a safety device that prevents the tool from operating unless the muzzle is pressed against a work surface
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We often see a lumber grade stamp with an "S-P-F" mark, implying that the lumber species may be Spruce, Pine, or Fir. "Hem-Fir" mark is another example of combining two or more species?Hemlock and Fir. What is the reason for combining different species into one group?
What will be an ideal response?
Technician A says that the sodium filling used in some exhaust valve stems lightens the valve for better low-speed operation. Technician B says that a valve that has a wide margin must be replaced. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
A(n) ____ selects two to four adjacent colors on the 12-slice color wheel
a. polychromatic combination b. analogous color combination c. complementary color combination d. monochromatic scheme
____ are the parallel framing members that make up most of the floor framing.
A. Sill plates B. Floor joists C. Box sills D. Sill sealers