【判断题】【消耗次数：1】
开环控制的特点是输出量不会对系统的控制作用发生影响。
①
正确
②
错误
参考答案：
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心输出量是指（）
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每分钟由一侧心房射出的血量
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每分钟由一侧心室射出的血量
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每分钟由左、右心室射出的血量之和
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一次心跳一侧心室射出的血量
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一次心跳两侧心室同时射出的血量
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