您所在的当前位置：初中物理试题 >

电学

> 用一根棒去接触已带正电的验电器的金属球，发现验电器的金属箔张角增大，则这根棒可能是 A.用毛皮摩擦过的橡胶棒 B.用丝绸摩擦过的玻璃棒 C.用毛皮摩擦过金属棒 D.不带电的金属棒

问题：

发布时间：2024-09-12

用一根棒去接触已带正电的验电器的金属球，发现验电器的金属箔张角增大，则这根棒可能是

A.用毛皮摩擦过的橡胶棒
B.用丝绸摩擦过的玻璃棒
C.用毛皮摩擦过金属棒
D.不带电的金属棒

参考答案：

提问用户：d9***iwv

可能感兴趣的题目：

1 The girl often helps her best friend, ______ is not good at English. A．which B．who C．what D．where
2 阅读理解。 I asked Jackie a lot of questions. I asked if she became close to her patients. She said, "Some I do, especially if I have become their close friends and they tell me things they wouldn"t tell anyone else. I"ve found it harder for the patient"s family to accept what"s happening. In most cases, the dying person has accepted the truth." I asked her how she could do this work for so long. She said,"I have taken care of 3,000people over 37years. I consider dying to be a very important part of life. I feel good because I can make these people"s journey easier." Jackie was the mother I have never had. My own mother, Helen, was taken away from me right after I was born. I never knew her. And I had a strange relationship with my father. He was a Sunday father. Since my sister and I lived in foster homes, he came to visit only on Sundays. But at the hospice (临终安养院), nurse Jackie gave me hope, love and encouragement. She listened to all my stories, and I listened to hers. It was a comfort. The nurses had told my family that death was coming near. As time went on, I became the star patient at the hospice, because I didn"t go according to plans. My kidneys started working again and could function without dialysis (透析). It was a mystery to my doctors. My friends said It was a miracle. But I knew what actually cured me. The employees showed me off to other patients and being the ham I was, I enjoyed. 1. According to the second paragraph, the reason why Jackie feels happy is that _____. A. she can have a trip with the patient B. She knows dying is very important C. She can reduce patients" pain during their last days D. she can arrange a journey for the patients before they die 2. They author mentioned his parents in the third paragraph in order to tell us _____. A. he wants parents to love their own children B. Jackie cares for him more than his parents do C. he loves Jackie more than he loves his patients D. he had a very unhappy childhood 3. The underlined word "miracle" in the fourth paragraph means something that is _____. A. very exciting B. hard to believe C. very risky D. very important 4. we can learn from the passage that _____. A. Jackie worked in the hospice as a volunteer. B. the author"s mother left him when he was two C. the author was the youngest child in his family D. the author didn"t like being the hospice poster boy 5. According to the author, _____ actually cured him. A. Jackie"s love and encouragement B. other patients" moving stories C. the help of a well-known doctor D. his strong desire to live
3 Restaurants in every corner of Mianyang not only provide job opportunities but___ lots of taxes as well. A．bring in B．bring about C．result in D．result from
4 设函数f（x）=2sin（ π 2 x+ π 5 ）．若对任意x∈R，都有f（x 1）≤f（x）≤f（x 2）成立，则|x 1-x 2|的最小值为 ______．
5 下列说法不正确的是 A．钠在氧气中燃烧生成淡黄色的固体Na2O2，可做为呼吸面具的供氧剂 B．液氯是氯气的水溶液，它能使干燥的有色布条褪色 C．氯气能与大多数金属化合，生成金属氯化物（盐） D．氯水具有杀菌、漂白作用是因氯水中含有强氧化性的次氯酸
6 古时有“守株待兔”的寓言。设兔子的头部受到大小等于自身体重的打击力即可致死，并设兔子与树桩作用时间为0.2s，则被撞死的兔子其奔跑的速度可能为（g取10m/s 2）（） A．1m/s B．1.5m/s C．2m/s D．2.5m/s
7 When we finally ______ to get all the work done, we were so exhausted that we simply felt like lying down and having a good sleep. A．tried B．managed C．succeeded D．attempted
8 读图，完成各题。小题1:图示区域的典型农业地域类型是 A．水稻种植业 B．商品谷物农业 C．大牧场放牧业 D．乳畜业小题2:图示区域制约农业发展的主要社会经济因素是 ①缺乏市场信息及市场联系，交通运输不便　②商品生产落后，农业技术落后　③水源不充足　④地形崎岖，土壤贫瘠 A．①② B．②③ C．③④ D．①④
9 下列气体中有毒、有刺激性气味且有颜色的气体是（） A．H2S B．NH3 C．NO2 D．SO2
10 以下地理现象与当地自然条件不相吻合的是 A.阿拉伯人的传统服装多为白色 B.荷兰广泛分布着抽水风车 C.新疆有“早穿棉袄，午穿纱，晚上围着火炉吃西瓜”的现象 D.北冰洋沿岸的因纽特人住吊脚楼