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【单选题】
吸收操作中,当 X * >X 时:A.
发生解吸过程
B.
. 解吸推动力为零
C.
发生吸收过程
D.
吸收推动力为零
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【多选题】What has contributed to Oprah’s success?
A.
Her persistence.
B.
Her determination.
C.
Her father’s education.
D.
Her courage when confronting difficulties.
【单选题】What has contributed much to America's lack of qualified skilled workers?
A.
The outdated education system.
B.
The current new classification of workforce.
C.
The fact that most American workers are illiterates.
D.
The fact that the blue-collar workers are not used to the factory work.
【简答题】交流电的周期是指 ,用字母 表示,单位是 ;频率是指 ,用字母 表示,单位是 ;周期与频率之间的关系是 ;角频率是指 ,用字母 表示,单位是 。
【简答题】交流电的周期用字母____表示,单位是____。
【简答题】交流电在单位时间内(1秒)完成周期性变化的次数叫做_____;完成一次周期性变化所用的时间叫做_____。周期用字母_____表示,单位是____。频率用字母____表示,单位____。
【多选题】What has contributed to AR's increasing success?
A.
Complex technological advances.
B.
Meaningful content.
C.
Convincing and realistic interaction of the virtual with the physical environment.
D.
Unique value that goes beyond what other technologies deliver
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