皮皮学，免费搜题
登录
搜题
【单选题】
机械波波动方程为 (SI) ,则A.
其振幅为３ｍ
B.
其周期为 1/3 ｓ
C.
其波速为 10 ｍ / ｓ
D.
波沿ｘ轴正向传播
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
【简答题】35-44
【单选题】Which of the following factors did not contribute to the London dialect becoming standard English?
A.
The court moved from Winchester to London.
B.
The dialect was used by educated people.
C.
The dialect remained unaffected by foreign trade.
D.
The dialect was gradually spoken by more and more people.
【单选题】London dialect was once disseminated throughout the country NOT because London was ——.
A.
a commercial center
B.
a political center
C.
a printing center
D.
a linguistic center
【简答题】竖式计算 62×77= 47×34= 18×90= 35×23= 65×44= 70×36=
【简答题】35-44 ________________ __________________
相关题目：