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计算题：某钻孔深50m，粗径钻具长6.0m，机高1.40m，机上余尺2.50m，需配钻杆多少米？

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当纳税人欠缴税款、且经税务机关催缴后仍不缴纳税款时，应当启动的程序是（）。

A. 违法调查程序
B. 税收争议处理程序
C. 欠税追征程序
D. 税款征收程序

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中职国家助学金标准为（）。

A. 500元/年
B. 1000元/年
C. 2000/年
D. 3000元/年

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公文排版规格正文用（）号仿宋体字，一般每面排（）行，每行（）个字。

A. 4；21；28
B. 3；21；28
C. 3；22；28
D. 4；22；28

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You are installing Oracle Database 11g on your server. During the installation Oracle Universal Installer （OUI） prompts you to enter the path of the inventory directory and also prompts you to specify an operating systemgroup name. Which statement is true in this case（）

A. The ORACLE_BASE parameter is not set.
B. The installation is being performed by the root user.
C. The operating system group that will be specified should have root user as its member.
D. The installation is being performed without the "Create Starter Database" option selected.
E. The operating system group that will be specified must have permission to write to the inventory directory

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