手持电动工具和移动式电气设备的安全使用条件，包括( )。
A．Ⅱ类、Ⅲ类设备没有保护接地或保护接零的要求
B．移动式电气设备的保护零线(或地线)不应单独敷设，而应当与电源线采取同样的防护措施
C．移动式电气设备的电源插座和插销应有专用的接零(地)插孔和插头
D．一般场所，手持电动工具应采用工类设备
E．使用Ⅱ类设备应配用绝缘手套、绝缘鞋、绝缘垫等安全用具
参考答案：A,B,C
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| Miss Joan was a kindergarten (幼儿园) teacher who taught in a small village school. She always worked long hours to prepare interesting 1 for her students. She also helped the other teachers, giving them many good 2 to help them teach better. She loved her students and they loved her, too. Yes, in many ways she was nearly perfect. 3 , she did have two small shortcomings (缺点). First, she would always 4 snacks in her desk. Sometimes the food attracted mice and other unwanted guests. Her the other shortcoming was that she was 5 afraid of snakes. She would not allow anyone in her class to 6 pictures of snakes or even say the word. She was even afraid when her kids were 7 about words that start with the letter S. One day these two things came 8 . A teacher 9 knew about Miss Joan's two shortcomings decided to make fun of her. He bought a toy snake in a shop. When Miss Joan wasn't in the classroom, he took away some of her snacks and put the toy snake 10 her desk instead. When Miss Joan took out the snack to eat, she saw a toy snake. She was too frightened to move, and from then on she never hide snacks in her desk. | ||||
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