题目内容

转K6型、转K5型须使用钢质下心盘垫板，总厚度不大于（）。

A. 20mm
B. 30mm
C. 40mm
D. 60mm

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在什么场合下选用比例（P），比例积分（PI），比例积分微分（PID）调节规律？

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角变形主要是由于焊缝截面形状上下不对称，焊缝横向收缩上下不均匀而产生。

A. 正确
B. 错误

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钻头（）为零，靠近切削部分的棱边与孔壁的摩擦比较严重，容易发热和磨损。

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You have a computer that runs Windows XP Professional. Normal backups are scheduled to run every Sunday at 22:00 Eastern Time. Differential backups are scheduled to run every Monday through Saturday at 22:00 Eastern Time. The computer fails on Thursday at 9:00 Eastern Time. You need to restore the computer from the backup by using the most recent data available. You must achieve this goal by using the minimum amount of administrative effort. You reinstall Windows XP Professional on the computer. What should you do next?（）

A. Restore Wednesday’s differential backup.
B. Restore Sunday’s normal backup. Restore Wednesday’s differential backup.
C. Restore Sunday’s normal backup. Restore Monday’s differential backup. Restore Tuesday’s differential backup. Restore Wednesday’s differential backup.
D. Restore Sunday’s normal backup. Restore Wednesday’s differential backup. Restore Tuesday’s differential backup. Restore Monday’s differential backup.&e

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转K6型、转K5型须使用钢质下心盘垫板，总厚度不大于（）。

A. 20mm B. 30mm C. 40mm D. 60mm

在什么场合下选用比例（P），比例积分（PI），比例积分微分（PID）调节规律？

角变形主要是由于焊缝截面形状上下不对称，焊缝横向收缩上下不均匀而产生。

钻头（）为零，靠近切削部分的棱边与孔壁的摩擦比较严重，容易发热和磨损。

A. 20mm
B. 30mm
C. 40mm
D. 60mm