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【简答题】
从应用的角度看,数据仓库的发展演变可以归纳为5个阶段: 、 、 、 和以实时数据仓库和自动决策为主。
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皮皮学刷刷变学霸
举一反三
【单选题】关于传染病区使用口罩，以下哪项是错误的______
A.
口罩必须盖住口鼻
B.
口罩潮湿应立即更换
C.
一次性口罩使用时间不超过6h
D.
不用时不能挂在胸前
E.
不可用污染的手接触口罩
【单选题】Hardly ___a sick passenger on board ___the cabin attendant notified and kept the captain informed of the situation.
A.
she had seen...than
B.
had she seen...when
C.
had she seen ...than
D.
she had seen...when
【单选题】传染病区使用口罩以下哪项是错误的（）。
A.
口罩必须盖住口鼻
B.
口罩潮湿应立即更换
C.
口罩用完以后，污染面向外折叠，放置备用
D.
不用时不能挂在胸前
E.
不可用污染的手接触口罩
【简答题】选用方框内合适的短语并用其正确形式填空(每个短语限用一次)。 add up, calm down, be concerned about, go through, set down 1. I could hardly wait to tell him the good news but I had to ______________ before I could speak. 2. You wil...
【单选题】Which of the following sentences is in full inversion?
A.
Never have I seen such a performance.
B.
Nowhere will you find the answer to the questions.
C.
Ahead sat an old woman with a book in her hand.
D.
Hardly had she gone out when a student came to visit her.
【单选题】Why has the man hardly seen the woman lately?
A.
She had a traffic accident.
B.
She moved to another place.
C.
She is working unusual hours.
相关题目：
【单选题】传染病区使用口罩以下哪项是错误的（）。
A.
口罩必须盖住口鼻
B.
口罩潮湿应立即更换
C.
口罩用完以后，污染面向外折叠，放置备用
D.
不用时不能挂在胸前
E.
不可用污染的手接触口罩