101.   A PCS is similar to a cellular-phone system, though it operates at a higher frequency and can accommodate more subscribers in a particular band width.

102.   A PCS is similar to a cellular phone system, though it operates at a higher frequency.

103.   A shelter for a handful of residents who fled their homes was operating at Georgetown Elementary School.

104.   A second unit is operating at a reduced capacity, traders said.

105.   A spokesman for Random House, Stuart Applebaum, said the companies operate at arms length.

106.   A stream runs through the living room, complete with turtles and koi, a fog mist that operates at the flip of a switch and the requisite hammock.

107.   A. Most volunteers are not operating at some borderline level where one suggestion or piece of advice will lead to an instant departure.

108.   A water purification site now operating at Goma can produce a million gallons of pure water a day, Perry said.

109.   A. We are operating at capacity and there are a lot of shows that we have to turn down.

110.   According to the Department of Labor, the auto industry has been operating at record levels of overtime since last fall.