皮皮学，免费搜题
登录
搜题
【单选题】
两导线并联时的总电阻为 2.5 Ω,串联时的总电阻为 10 Ω,则这两导线的电阻值()A.
一定 5 Ω
B.
一个 7.5 Ω，一个 2.5 Ω
C.
一个 3.5 Ω，一个 6.5 Ω
D.
无法确定
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Psychologists study memory and learning with both animal and human subjects. The two experiments reviewed here show how short-term memory has been studied. Hunter studied short-term memory in rats. He...
A.
where the food was
B.
how to leave the cage
C.
how big the cage was
D.
which light was turned on
【简答题】、用 since 和 for 填空 1.______two years 2.____two years ago 3.___last month 4.______ 1999 5._______yesterday 6._______ 4 o’clock 7 4 hours 8._____an hour ...
【简答题】He has studied here for about four years, _______________ ?
【简答题】在静电场中,电势不变的区域,场强必定为
【简答题】( ) 1 _____ here and ask him about it yesterday? A. Did you come B. Would you not go You didn't come D. Aren't you go ( ) 2 ___ he ___ a good time last Sunday? A. Were; were ...
【简答题】句型转换。 1. He has studied English for 4 years. (改为一般疑问句) he_____English for 4 years? 2. My parents have been to America . (就画线部分提问) _ _parents_____? 3. Lucy's traveled to another province. (改为否定句) Lucy ...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
