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2-9 什么是系统的开环传递函数?什么是系统的闭环传递函数?当给定量和扰动量同时作用于系统时,如何计算系统的输出量?
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【判断题】一般来说,喜欢冒险 ,具有风险意识的创业者要远比安全保守的创业者风险承受能力更强。
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