题目内容

盛装其他气体的钢质无缝气瓶,检验周期()

A. 1年一次
B. 2年一次
C. 3年一次
D. 5年一次

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Examine these two statements:Which three are true about the MRKT tablespace?()

A. The MRKT tablespace is created as a small file tablespace, because the file size is less than the minimum required for big file files.
B. The MRKT tablespace may be dropped if it has no contents.
C. Users who were using the old default tablespace will have their default tablespaces changed to the MRKT tablespace.
D. No more data files can be added to the tablespace.
E. The relative file number of the tablespace is not stored in rowids for the table rows that are stored in the MRKT tablespace.

痫病病位在心,与肝、脾、肾脏腑密切相关()

A. 正确
B. 错误

离心式的泵(包括渣浆泵)的工作过程,实际上是一个()的过程。

CRH380B型动车组全列由2个牵引单元组成,每个牵引单元设()变压器。

A. 一个
B. 二个
C. 三个
D. 四个

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