Which type of antenna should usually be used at the central location in a point-to-multipoint wireless link?

A. unidirectional
B. omnidirectional
C. directional
D. semi-directional


Answer: B

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Technician A says that Monotherm pistons are manufactured with a much tighter fit to the liner bore than aluminum trunk pistons. Technician B says that Monotherm pistons do not require an oil spray jet aimed at the underside of the piston. 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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Submerged water plants provide oxygen that is needed by fish and other pond animals to survive. In turn the animal life respires and provides ____________________ needed by the plants for photosynthesis

Fill in the blank(s) with correct word

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The three common types of axial fans are:

A) Propeller, vane axial, and tube axial. B) Forward-curved, backward-curved, and propeller. C) Box fan, window fan, and oscillating. D) Clockwise, counterclockwise, and oscillating.

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PLCs introduced in the future will have variable-based addressing for variables and not rack/slot addressing

Indicate whether the statement is true or false

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