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【简答题】
如果液体中某点处的绝对压力小于大气压力,这时该点的绝对压力比大气压力小的那部分压力值,称为 。
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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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