浙江省台州市书生中学人教版高中英语必修4同步练习：Unit1 复习题

浙江省台州市书生中学人教版高中英语必修4同步练习：Unit1 复习题，扫描并关注下面的二维码，获取相关答案！

Unit1 复习题 A You have heard of inventor James Watt. He built a successful steam engine in 1969. But the first baby step to this invention took place in Egypt.The year was 120BC. A man attached two pipes to an ordinary kettle. He hung a globe over it. The steam made the globe go around. The device served no useful purpose. It was just something to see. No one at that time saw the potential. Over 1,800 years, in 1698, Englishman Thomas Saery put steam to work. He patented the

"高中物理选修3-1复习多用电表原理知识点高中家教班老师将人教版高中物理选修3-1复习，多用电表原理知识点考点做了一个整理，希望能帮助大家更好地复习与备考。 一、内部结构测量时，黑表笔插入-插孔，红表笔插入+插孔，并通 另外，要学好高二化学，需""七会"".过转换开关接入与待测量相应的测量端。使 短周期元素化合价与原子序数的关系：价奇序奇，价偶序偶。用时，电路只有一部分起作用。二、测量原理(一)测直流电流和直流电压的原理，就是电阻的分流和分压原理，其中转换开关接 1 或 2 时测直流电流；接 3 或 4 时测直流电压；转换开关接 5 时，测电阻。(二)多用电表电阻挡(欧姆挡)原理"