搜题请搜索小程序“爱下问搜题”
问题
填空题
流量可调的液压泵称为（）泵。
答案
参考答案：变量
选择题
Jim’s mother just wants to know
that makes him so nervous.
A．why it does
B．what he does
C．how it is
D．what it is
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问答题 简答题
“长安米贵，居大不易”指哪位诗人？
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