关于伤寒杆菌抵抗力下列哪些是正确的() A.在自然环境中生命力强,耐低温 B.水中可 发布时间:2017-09-01 14:05 │ 来源:www.tikuol.com 题型:多项选择题 问题: 关于伤寒杆菌抵抗力下列哪些是正确的()A.在自然环境中生命力强,耐低温B.水中可存活2~3周C.粪便中可存活1~2个月D.60℃,15分钟或煮沸后即可杀灭E.对一般消毒剂不敏感
题型:多项选择题 将一个电量为3×10-5C的负电荷,从零势能点移到A点,要克服电场力做功6×10-5J,再将该电荷从A移到B点电场力做功1.8×10-4J.求:(1)A、B两点的电势差为多少?(2)A、B两点的电势分别是多少? 查看答案
题型:多项选择题 请根据句意或括号中的中文提示、英文释义,写出句中所缺单词,使句子通顺。1. My classmates and I will go to the movies _____ (今晚).2. He stayed at home and watched TV _____ (代替) of going out to play with his friends.3. Suddenly there was a great crash of _____ (the loud noise following lightning).4. Wearing dark glasses can _____ (keep something safe from danger) your eyes from the sun.5. —Can you tell me your e-mail _____? —Yes. It is Joe@126.com. 查看答案