【单选题】
Pool Watch
Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble.A、report says that on average 15 people drown inBritish pools each year, but many more suffer major injury after getting into difficulties. Now a French company has developed an artificial intelligence system called Poseidon that sounds the alarm when it sees someone in danger of drowning.
When a swimmer sinks towards the bottom of the pool, the new system sends an alarm signal to a poolside monitoring station and a lifeguard’s pager (呼机). In trials at a pool inAncenis, near Nantes, it saved a life within just a few months, saysAlistair McQuade, a spokesman for its maker, Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overhead video cameras.AI software analyses the images to work out swimmers’ trajectories (轨迹). To do this reliably, it has to tell the difference between a swimmer and the shadow of someone being cast onto the bottom or side of the pool.
It does the same with an image from another camera viewing the shape from a different angle. If the two projections are in the same position, the shape is identified as a shadow and is ignoreD、But if they are different, the shape is a swimmer and so the system follows its trajectory.
To pick out potential drowning victims, anyone in the water who starts to descend slowly is added to the software’s "pre-alert" (预先警戒) list, says McQuade. Swimmers who then stay immobile on the pool bottom for 5 seconds or more are considered in danger of drowning. Poseidon double-checks that the image really is of a swimmer, not a shadow, by seeing whether it obscures (使模糊) the pool’s floor texture when viewed from overheaD、If so, it alerts the lifeguard, showing the swimmer’s location on a poolside screen.
The first full-scale Poseidon system will be officially opened next week at a pool in High Wycombe,Buckinghamshire. One man who is impressed with the idea is TravorBaylis, inventor of the clockwork (时钟装置) radio.Baylis runs a company that installs swimming pools-and he was once an underwater escapologist (脱身杂技演员) with a circus (马戏团)."I say full marks to them if this works and can save lives," he says.
Which of the following statements about TravorBaylis is NOT true
A．He owns a swimming pool.
B、He invented the clockwork radio.
C．He was once an entertainer. D．He runs a company.
网考网参考答案：A
网考网解析：
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Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble.A、report says that on average 15 people drown inBritish pools each year, but many more suffer major injury after getting into difficulties. Now a French company has developed an artificial intelligence system called Poseidon that sounds the alarm when it sees someone in danger of drowning.
When a swimmer sinks towards the bottom of the pool, the new system sends an alarm signal to a poolside monitoring station and a lifeguard’s pager (呼机). In trials at a pool inAncenis, near Nantes, it saved a life within just a few months, saysAlistair McQuade, a spokesman for its maker, Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overhead video cameras.AI software analyses the images to work out swimmers’ trajectories (轨迹). To do this reliably, it has to tell the difference between a swimmer and the shadow of someone being cast onto the bottom or side of the pool.
It does the same with an image from another camera viewing the shape from a different angle. If the two projections are in the same position, the shape is identified as a shadow and is ignoreD、But if they are different, the shape is a swimmer and so the system follows its trajectory.
To pick out potential drowning victims, anyone in the water who starts to descend slowly is added to the software’s "pre-alert" (预先警戒) list, says McQuade. Swimmers who then stay immobile on the pool bottom for 5 seconds or more are considered in danger of drowning. Poseidon double-checks that the image really is of a swimmer, not a shadow, by seeing whether it obscures (使模糊) the pool’s floor texture when viewed from overheaD、If so, it alerts the lifeguard, showing the swimmer’s location on a poolside screen.
The first full-scale Poseidon system will be officially opened next week at a pool in High Wycombe,Buckinghamshire. One man who is impressed with the idea is TravorBaylis, inventor of the clockwork (时钟装置) radio.Baylis runs a company that installs swimming pools-and he was once an underwater escapologist (脱身杂技演员) with a circus (马戏团)."I say full marks to them if this works and can save lives," he says.
Which of the following statements about TravorBaylis is NOT true
A．He owns a swimming pool.
B、He invented the clockwork radio.
C．He was once an entertainer. D．He runs a company.
网考网参考答案：A
网考网解析：
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