题目

某滑动变阻器标有“100Ω，5A”的字样。它表示这滑动变阻器的电阻变化范围是             ，允许通过的电流最大值是         。 答案：0-100Ω      、    5A  解析:考查滑动变阻器铭牌标记的含义，“100Ω，5A”的字样。它表示这滑动变阻器的电阻变化范围是0-100Ω，允许通过的电流最大值是5A。(A) 根据句意和汉语注释，写出单词的正确形式。【1】Her sister has been (在国外)for further study for years.【2】I like Chinese art and I want to learn more (知识) about it.【3】 We had a few wonderful ( 经历 ) in that country several years ago.【4】Wuxi isn’t his hometown, so he has few _________ (亲戚) there.【5】Has he ___________ (收到)a letter from his pen-friend from Britain since last Friday?(B) 根据句意，写出括号内所给单词的适当形式空。【6】I am surprised that a cow has four ______________ (stomach).【7】It’s _____________ (possible) for dogs to fly. Stop daydreaming, Eddie.【8】Her husband has been (die) for over three years.【9】The policemen’s ___________ (wife) are always busy with their housework.【10】 He is the ____________ (ugly) person I have ever seen, but he is very kind-hearted.