The hole drilled in sheet metal for a tapping screw should be the approximate size of the ____.

A. thread diameter
B. thread root diameter
C. shank diameter
D. head diameter


Answer: B

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All welding jobs require that the welder be certified.

Answer the following statement true (T) or false (F)

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Technician A says that the reason for twisting the wires on a J1939 data backbone is to enable the data bus to act as a giant aerial. Technician B says that J1939 requires the data wire pair to cycle through one full cycle twist per 1 centimeter of length. Who is correct?

A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B

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The ____________________ (wheat, rice, corn, and barley) were the first plants to be domesticated

Fill in the blank(s) with correct word

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All machinery needs periodic maintenance—even if the machine is working fine

Indicate whether the statement is true or false.

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