If a method of postweld finish is also to be specified, it is placed ____ the contour symbol.

A. above or below
B. left
C. right
D. above


Answer: A

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____ consist of large molecules composed of repeating structural units connected by chemical bonds.

A. Polymers B. Metals C. Non-metallic inorganic materials D. Organic materials

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TechnicianA says a shop exhaust hose is not needed because newer vehicles run very clean. TechnicianB says the shop's ventilation system should be connected to a vehicle's exhaust pipe when the vehicle is running. Who is correct?

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

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To avoid problems with the variation of gasoline, all government testing uses ________ as a fuel during testing procedures

A) TBA (tertiary butyl alcohol) B) Indolene C) Xylene D) MTBE (methyl tertiary butyl ether)

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9. Light is emitted from an LED as a result of the recombining of electrons and __________

A. optic fibers B. holes C. decibels D. nanometers

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