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【单选题】
铅在常温下的变形属:( )A.
冷变形
B.
变形
C.
弹性变形
D.
有冷变形也有热变形
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反馈参考答案：
举一反三
【多选题】What is the purpose of the recover command？（）
A.
Recover database datafiles from physical disk backup sets.
B.
Recover required incremental backups from physical disk backup sets.
C.
Recover required archived redo logs from physical disk backup sets.
D.
Apply incremental backups to recover the database.
E.
Apply archived redo logs to recover the database.
【单选题】Heat exchangers
A.
recover up to 90% of heat that would otherwise be lost.
B.
recover over 90% of heat that would otherwise be lost.
C.
are difficult to use.
【简答题】A．offset B．disrupt C．restore D．relieve
【单选题】采用比例调节器的定值控制系统,欲要减小稳态误差,则应( )。 (157219:第05章 船舶反馈控制系统基础:558)
A.
减小时间常数
B.
减小放大系数
C.
减小比例带
D.
减小偏差
【单选题】I could easily perceive that his heart burnt to relieve his starving kids, but he seemed ashamed to ______ his inability to me.
A.
discover
B.
recover
C.
demonstrate
D.
impress
【简答题】糜烂愈复(erosion recover)
【简答题】A．offset B．disrupt C．restore D．relieve
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