| お名前 | コメント |
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| Hobert | A jiffy bag <a href=" http://www.rail-canterbury.co.uk/p7irm/?report-writing-letter#enslave ">definition essay on management</a> Their product is a Wahooo Swim Monitor System. The system requires each swimmer to wear a headband, called a swimband. The band contains two sensors and a sonar transmitter that sends out a signal when it is submerged longer than 20 seconds. The signal triggers warning lights posted along the waterfront begin flashing yellow, and after 30 seconds, the alert turns red and a siren starts going off, alerting lifeguards that someone is in danger. (01/22 21:20 ns342370.ip-188-165-213.eu) |
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