皮皮学，免费搜题
登录
搜题
【简答题】
7图示电路中两个电压源的 和电阻分别为 , 及 , 。当将它们连接1时,电压表读数为0.3V,求连接2时电压表读数为多少(设电压表的内阻为 )?
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Children and Parents Do parents owe their children something? Yes, they owe them a great deal. One of their chief obligations is to give their children a sense of personal worth, for self-esteem is th...
A.
tell the child that other children are doing much better than him/her
B.
remind the child that he/she is not bright
C.
tell the child he/she is just a grass that people won't notice
D.
help the child to build up self-confidence
【简答题】在53．2 g氯仿(HCl3)中，溶入0．804 g萘(C10H8)，溶液的沸点比纯氯仿上升了0．455℃ ，请问氯仿的沸点升高常数是多少?
【简答题】把2.0g硫溶解在40.0g萘中，溶液的凝固点比纯萘低1.28℃，求硫的摩尔质量和分子式。