SZ9-35000/15.75变压器型号的含义是（）。
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AutoCAD 2004一次仅能打开一个图形文件。
A. 正确
B. 错误
Which two statements are true about the Automatic Workload Repository （AWR）（）
All AWR tables belong to the SYSTEM schema.
B. The AWR contains systemwide tracing and logging information.
C. The snapshots collected by the AWR are accessible through data dictionary views.
D. The snapshots collected by the AWR are used by self-tuning components in the database.
工业化过程的重心，由轻工业---重工业——加工工业的转变过程变动的原因是什么？
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