单选题:下列反应能自发进行: 题目分类:公共基础 题目类型:单选题 查看权限:VIP 题目内容: 下列反应能自发进行: A.c>b>a B.b>a>c C.a>C>b D.a>bc 参考答案: 答案解析:
一平面简谐横波的波动表达式为y=0.05Cos(20πt+47πχ)(SI)。取k=0,±l,±2,…,则t=0.5s时 一平面简谐横波的波动表达式为y=0.05Cos(20πt+47πχ)(SI)。取k=0,±l,±2,…,则t=0.5s时各波峰所在处的位置为( )。 分类:公共基础 题型:单选题 查看答案
What's the main reason the man doesn't like watching plays? What's the main reason the man doesn't like watching plays?A.Because they areexp 分类:公共基础 题型:单选题 查看答案