11.   Could cars be designed to be much more efficient than the eighteen percent you quote?

12.   Also, many dorm rooms and other campus buildings offer high-speed network connections that are vastly more efficient than the dial-up modem connections offered by commercial ISPs.

13.   And fast muscles are less efficient than slower ones.

14.   Another is a system for improved compacting of solid waste and covering it with a thin coating called Posi-Shell that has proved more efficient than dirt.

15.   Because of its just-in-time inventory model, Dell is more efficient than its rivals and can cut costs more deeply while staying profitable.

16.   Because the market in small stocks is much less efficient than the market for large, highly visible stocks.

17.   Berger said he had purchased the items from online auctions because it was more efficient than filling out hundreds of loan forms and saved on travel costs.

18.   But optical networks, which transmit information using pulses of light modulated by lasers, can be much more efficient than copper networks using pulses of electricity.

19.   But remember, a dirty filter is more efficient than a clean one because it will stop more dust and other particles.

20.   But only recently has technology emerged that allowed them to show how they can be more efficient than circuit networks for transmitting information like phone calls.