![](http://static.xuejinqu.com/qimg/482/482e65f8a84fff34d038a172796572e4.png)
(1)电瓶车自燃的原因很多,常见的是由于电源短路,形成大电流并产生大量的热。这一过程中,化学能转化为电能,电能再转化为
(2)针对上述电梯内电瓶车自燃隐患,宁波市未雨绸缪,早就采取了相应的措施,其中“阻车感应系统”已在多个小区推行。如图所示是某阻车感应系统在电梯轿厢内的信息传递示意图,一旦电瓶车进入电梯,就会被摄像头检测到,语音告警器将进行语音提示,同时电梯门不会关闭。这一信息传递过程与反射弧类似,图中的
(3)电动汽车一般由电池包供电。若电池包意外进水,可能引发电动汽车自燃,其机理如下:水电解→可燃性气体累积→遇明火,气体燃烧→引燃整车。这里的可燃性气体是
![](http://static.xuejinqu.com/images/y-prise.png)
同类型试题
![](http://static.xuejinqu.com/images/medal.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)