题目内容

微分方程的通解必定包含了该方程所有的解.

A. 对
B. 错

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一阶微分方程的等斜线不一定是积分曲线.

A. 对
B. 错

直线对H面的倾角用()表示。

[音频]

A. Because people just discovered the horse.
Because people just set up the Dickin Medal.
C. Because people just established the organisation.
D. Because people just found out about the horse’s brave actions.

[音频]

A. Because people wanted to become rich.
Because people went out to have too much fun.
C. Because people spent too much time enjoying nature.
D. Because people spent too much time inside their homes.

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