皮皮学，免费搜题
登录
搜题
【单选题】
如图所示,一平面简谐波沿 x 轴正向传播,已知 P 点的振动方程为 y = Acos(ωt+φ 0 ) ,则波的表达式为A.
y = Acos({ω[t-(x- l )/u]+φ 0 }.
B.
y = Acos({ω[t-(x /u)]+φ 0 }.
C.
y = Acos({ω[t-(x /u)] }.
D.
y = Acos({ω[t+(x- l )/u]+φ 0 }.
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
【简答题】Somehow Rey had managed to struggle free from the rope around his neck, after being left to die a slow death as punishment for being a bad Spanish greyhound（）． 20090506 It is believed that 50,000 gr...
【简答题】专业教研室主任、系主任和校长三种角色的管理者技能结构有何不同要求
【简答题】以下属于空压站贮气罐安全技术要求的是（ ）。
【简答题】Elizabeth Cleghorn Gaskell was one of the first English writers to describe in a novel the class struggle between the workers and the __________ in “ the H u ngry Forties ” .
【简答题】空压站的原料是（）。
【简答题】听力原文： The United States of America is often seen as a nation in which the pursuit of happiness is not a dream but a reality. The sad truth is that although portrayed as an unusually easy life, life in...
【简答题】三循空分空压站边界处供水压力为（）MPa，循环冷水温度为小于（）℃。
【简答题】Directions : Read the following passage, and select a suitable phrase for each blank from the word bank. Write down the corresponding letter for each item in the blank. A. figuring out B. pulled it ba...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
