GMAT
The most vexing problem faced by researchers exploring wind-powered generation of electricity is how a constant flow of power from an unpredictable natural source can be achieved, which meets demand but does not overload electrical grids with sudden voltage increases.
The most vexing problem faced by researchers exploring wind-powered generation of electricity is how to achieve a constant flow of power from an unpredictable natural source, a flow that meets demand but does not overload electrical grids with sudden voltage increases.
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