Thames Flood barrier protects London from storm surges; diesel-electric locomotive is a rolling electrical generator; Self-serve gas pump mixes octane, measures fuel and presents bill; When stakes are high, all bets look to the photo ...See moreThames Flood barrier protects London from storm surges; diesel-electric locomotive is a rolling electrical generator; Self-serve gas pump mixes octane, measures fuel and presents bill; When stakes are high, all bets look to the photo finish camera. Written by
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