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Explain the importance of effective breath control when making a presentation. Then describe the deep breathing exercise recommended in the textbook as a way to improve the kind of breathing that produces strong, sustained vocal quality.
Usable Power
The portion of power or energy that can be effectively used or delivered by a system without including losses or reserves.
Crankshaft
A mechanical part which translates the linear motion of pistons into rotational motion, fundamental to the functioning of an internal combustion engine.
Energy Content
The amount of energy present in a substance or system, which can be released or absorbed during a chemical or physical process.
Fuel
A substance consumed to produce energy through a chemical or nuclear reaction, commonly referring to materials used to power engines, such as gasoline or diesel.
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