学过安全用电知识后 ,大家都知道不高于36伏的电压为安全电压 .那么 ,不高于 36伏的电压总是安全的吗 ?例　某人体的电阻在 2 0 0 0欧至 30 0 0欧之间 ,为了安全 ,要求通过人体的电流不大于 1 0毫安 ,则此人身体接触的电压不能高于 (　　 ) .(Ａ) 36伏　　　　 (Ｂ) 2 5伏(Ｃ) After learning about the safe use of electricity, we all know that voltages no higher than 36 volts are safe voltages. So, is a voltage no higher than 36 volts always safe? For example, the resistance of a human body is 200 to 30 euros. Between 0 and 0 ohms, for the sake of safety, the current through the human body is required to be not more than 10 milliamperes, then the voltage of the person’s body contact cannot be higher than (). (A) 36 volts (B) 25 volts (C)