One highly accurate heat-sensing unit is known as the:

A) Digital readout
B) Optical thermometer
C) Heat control balance unit
D) Silver heat-sensing unit
E) None of the above


B

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A(n) ____________________ circuit is a circuit that has only one path for electrons back to the source of power.

Fill in the blank(s) with the appropriate word(s).

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Manifolds used in in-line engines are simple. Sometimes one runner will feed two neighboring cylinders. These are known as ____________________.

Fill in the blank(s) with the appropriate word(s).

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Radial trenching is a technique used in the irrigation of trees and shrubs

Indicate whether the statement is true or false

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When a diode is forward biased, the resistance is ____.

A. zero B. high C. low D. negative

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