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【多选题】
关于理想流体中小振幅动方程推导的假设条件，下面叙述正确的是（）。
A.
声波在传播过程中没有机械能损耗
B.
介质连续分布无间隙
C.
介质具有弹性和惯性
D.
介质不可压缩
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Task 1 Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A, B, C, a...
A.
in his mind
B.
in his laboratory
C.
with microscope
D.
with telescopes