Most heavy equipment machines have a hydraulic system that is driven by this prime mover:

a. electric motor
b. hydraulic motor c. gasoline engine
d. diesel engine


D

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Lightning is generated by the ominous-looking ____ cloud or thundercloud.

A. cirrostratus B. altocumulus C. cumulonimbus D. cirrus

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In cup walking, the arc length is changed by varying the tungsten stickout, the cup _____, and the angle that the welder holds the torch.? ?  

A. offset? B. bend? C. size? D. shape?

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It became illegal to vent replacement refrigerants in:

A) July 1, 1992. B) November 15, 1993. C) November 14, 1994. D) November 15, 1995.

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Once the analog signal has been sampled, the value is "held" until ________

Fill in the blank(s) with correct word

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