In the four-stroke internal combustion engine, hot vapors are expelled during the stroke.

In the four-stroke internal combustion engine, hot vapors are expelled during the exhaust stroke.

A four-stroke cycle engine is an internal combustion engine that uses four distinct piston strokes (intake, compression, power, and exhaust) to complete one operating cycle.  The piston make two complete passes in the cylinder in order to complete one operating cycle.

The four separate strokes are; intake, compression, combustion and exhaust.

- "friedan's attitude towards what she calls the 'feminine mystique' is that she sees the ideal of femininity as stiffing women's potential in the 1950's. betty friedan was a writer and activist of the 1950's and 60's."

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answer: the risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: