The engine is the ________ of an automobile .
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The engine burns fuel to produce _______ .
The auto ________ is composed of body shell, doors, windows, body trim, interior trim and seats.
爱因斯坦模型认为所有原子的振动频率都相同。
A. 对
B. 错
爱因斯坦模型的格波的频率,属于长光学支频率。
A. 对
B. 错