题目内容

为什么压缩机能压缩气体而不能打水?

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变压器的铁芯由铁芯柱和铁轭两部分组成。

A. 正确
B. 错误

隧道防水板应采用哪些材料?并符合哪些要求?

You need to restore your database back to 9/30/2008 at 18:00. In what order would you run the following commands to compete this task?() a. restore controlfile until time `09/30/2008:18:00:00’ b. restore database until time `09/30/2008:18:00:00’ c. restore spfile until time `09/30/2008:18:00:00’ d. recover database until time `09/30/2008:18:00:00’ e. alter database open resetlogs f. alter database open

A. b, d, e
B. b, d, f
C. c, a, b, d, e
D. c, a, b, d, f
E. a, b, d, e

与血的运行关系最为密切的是()。

A. 肺脾肾
B. 心脾肝肾
C. 心肺肝脾
D. 脾肺肾肝

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