()指离线备件需经焊、铆、镀、切削、镶补等加工工艺或更换价值较高的元器件、电机更换绕组、精密器件的排除故障等,一般须符合专门的制造技术标准才能恢复使用功能的修复称为“恢复性修复”。
A. 维护性修复
B. 恢复性修复
C. 一般修复
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人为地使运动的物体(列车)减速或阻止其加速的物理现象称为制动。
A. 正确
B. 错误
冷轧厂1780机组酸洗罐中添加的缓稀剂对漂洗段停车斑没有好处。
A. 正确
B. 错误
柴油机高压油管尺寸对喷油规律的影响是()。 ①油管越长,喷油延迟角越大; ②油管越长,喷油持续角越大; ③油管越长,实际喷油提前角变小; ④油管内径越小,喷射延迟角越大; ⑤多缸机高压油管长度应相等; ⑥油管较长的缸供油提前角应减小。
A. ①+②+③+⑤
B. ①+③+④+⑤
C. ①+③+④+⑥
D. ②+④+⑤+⑥
A user has a computer that runs Windows 2000 Professional. The user plans to upgrade the computer to Windows XP Professional. You need to instruct the user how to perform the upgrade. You must ensure that the user is only prompted to enter the Window XP product ID during the installation. Which command should you instruct the user to run?()
A. sysprep.exe -nosidgen
B. sysprep.exe -reseal
C. winnt32 /duprepare
D. winnt32. exe /unattend