[判断题]处理煤尘爆炸事故时,通过支护不好地点时,队员要保持距离按顺序-我要搜题网

[判断题]重大火灾人员伤亡界定标准为造成10人以上30人以下死亡,或者30人以上100人以下重伤的火灾。( )
A.正确
B.错误

[单项选择]SNP在人类基因组中的平均密度为（）
A. 1／5000bp
B. 1／1000bp
C. 1／4000bp
D. 1／2000bp
E. 1／3000bp

[单选题]()阻火器是用来阻止易燃气体、液体的火焰蔓延和防止回火而引起爆炸的安全装置。
A.正确
B.错误

[不定项选择题]共用题干 Pool Watch
______(46)The Royal Society for the Prevention of Accidents says that on average 1 5 pe6ple drown in British pools each year,but many more suffer major injury after getting into difficulties.Nowa 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（携带式电子呼叫机）.In trials at a pool in Ancenis , it saved a life within just a few months,says Alistair McQuade,a spokesman for its maker,Poseidon Technologies.
______(47)AI software analyses the images to work out swimmers'trajectories（轨迹）.To do this re-liably,it has to tell the difference between a swimmer and the shadow of someone being cast onto the bottom or side of the pool."The underwater environment is a very dynamic one,with many shadows and reflections dancing around,"says McQuade.
The software does this师"projecting" a shape in its field of view onto an image of the far wall 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.______（48)
To pick out potential drowning victims,anyone in the water who starts to descend slowly is added to the software's"pre-alert"list,says McQuade.______(49)Poseidon double-checks that the image really is of a swimmer,not a shadow， by seeing whether it obscures 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.______(50)Baylis runs a company that installs swimming pools-and he was once an underwater escapologist (擅长从捆扎的绳索中脱身的杂技演员）with a circus." I say full marks to them if this works and can save lives,"he says. ______(50)
A.But if they are different,the shape is a swimmer and so the systeni follows its trajectory.
B.One man who is impressed with the idea is Travor Baylis,inventor of the clockwork（时钟机构）radio.
C.Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble.
D.Baylis says that any local authority spending￡30,000-plus on a Poseidon system ought to be investing similar amounts in teaching children to swim.
E.Swimmers who then stay immobile on the pooi bottom for 5 seconds or more are considered in danger of drowning.
F.Poseidon keeps watch through a network of underwater and overhead video cameras.

[判断题]处理煤尘爆炸事故时,通过支护不好地点时,队员要保持距离按顺序通过。 ( )A.正确B.错误

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[判断题]处理煤尘爆炸事故时,通过支护不好地点时,队员要保持距离按顺序通过。 ( )
A.正确
B.错误