For waves, for each element, its energy increases when energy is transferred in, and its energy decreases when energy is transferred out.
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Waves are a way of propagating (传播) energy.
A. 对
B. 错
In the wave equation, the origin (原点) of the axis must be selected at the wave source.
A. 对
B. 错
In the wave equation, it is convenient to select the wave source as the origin (原点) of the axis.
A. 对
B. 错
思维理论认为智能的核心是
A. 知识
B. 能力
C. 思维
D. 技术
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