题目内容

水准管上相邻两条分划线间的（）所对应的圆心角，称为水准管的格值。

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判断正误，并说明理由：后现代文化的两大特征是“消解”和“复制”。

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为了保证装配后滚动轴承与轴颈和壳体孔台肩处紧贴，轴承的圆弧半径应（）轴颈或壳体处的圆弧半径。

A. 小于
B. 等于
C. 大于
D. 不大于

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Companycom has been performing scheduled backups of their data to tape using "tar" in a script for over one year with no problems. Recently, the tar command is returning a non zero return code during the backup phase, causing the script to fail. What is the primary cause of this problem?（）

A. The files have grown to over eight gigabytes in size
B. The file systems are corrupt, and fsck should be run
C. The tape block size has been changed from the default
D. The user’s limit has been changed to less than eight gigabyte

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临时接地线主要由软导线和接线夹头组成。其中，相同的三根软导线是接（）用的，另一根软导线是接（）用的。

A. 火线、零线
B. 零线、接地装置
C. 相线、接地装置

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