Obviously they were getting nowhere with the meeting, so he decided to ______ from making a final decision that afternoon.
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The president arrived, ________ by twelve soldiers.
A. raided
B. escorted
He _______ to the peak of sporting achievement.
A. ascended
B. descended
根据输入信号和输出信号的个数,系统有单输入单输出系统和多输入多输出系统。
A. 对
B. 错
因果系统的响应不会出现在激励加入以前,也可以说激励是产生响应的原因,响应是激励产生的结果。
A. 对
B. 错