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搜题
【简答题】
自动控制系统是具有被控变量的（ ）的闭环系统。
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】画图说明主流学派经济学家是怎样用供求分析法说明经济的“滞胀”状态的。
【单选题】It was reported that the plane I was to have taken crashed soon after it took off. _______ the traffic jam, I was five minutes late for the plane. [ ]
A.
As a result of
B.
Thanks to
C.
Because of
D.
on account of