Technician A says that a green 9-pin J1939 DLC must be used to connect to a post-2014 truck powertrain data bus.  Technician B says that the green 9-pin J1939 DLC cannot connect to a pre-2103 data bus. Who is correct??

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


Answer: A

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When flex duct is hung or run over long distances it must be supported every ________ feet with some sort of non-crimping hanger

A) 20 B) 5 C) 10 D) 15

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When a BJT amplifier is saturated, VCE is about ________ and IC is ________

A) zero, minimum B) zero, maximum C) 25 V, 10 mA D) VCC, minimum

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Technician A says many states have I/M programs that require the vehicle owners to maintain their vehicles in order to meet emission standards. Technician B says vehicles produced in the United States have been required to meet specific emission standards. Who is correct?

A. A only B. B only C. both A and B D. neither A nor B

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Which of these is the most common unit of heat used in North America??

A. ?British thermal unit B. ?American thermal unit C. ?Kilopascal D. ?Fahrenheit

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