Hard hats should be made of fiberglass or _____
a. metal
b. reinforced plastic
c. styrofoam
d. rubber
b
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In the ________ system the graft union itself is kept warm by PVC pipe containing recirculating hot water. The graft union is laid against the pipe, but the scion and roots protrude into areas having lower temperatures.
Fill in the blank(s) with the appropriate word(s).
A luminaire is _____.
A. a complete lighting unit B. a method of lighting C. the power source for a lighting unit D. the lamp portion of a lighting unit
The compressor in the refrigerator has a protective device that keeps it from overloading and damaging itself. This device is called a(n) ____.
A. overload B. capacitor C. mass control D. speed control
What are the top three safety hazards in the wind power industry?
What will be an ideal response?