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【单选题】
控制系统中,若执行机构发生故障而卡死在某一位置,这时被控量将( )。A.
保持不变
B.
达到最大值
C.
达到最小值
D.
不能自动控制
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反馈参考答案：
举一反三
【简答题】A．north B．worse C．horse D．force
【简答题】( ) 其中 为球面 下半部分的下侧.
【简答题】Louis Armstrong had two famous nicknames(绰号).Some people called him Bagamo.They said his mouth looked like a large bag.Musicians often called him Pops,as a sign of respect for his influence(影响) on the...
【单选题】听力原文：M: These shoes are on sale. We can buy two pairs for the coming winter. W: But look at the price. My mother bought the same things at half the price. What are they talking about?
A.
The coming year.
B.
The man's mother.
C.
Buying shoes.
【简答题】A．north B．short C．horse D．worker
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