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【多选题】
在 Windows 中当给一个文件赋予只读属性后,此文件( )A.
不可以进行复制操作
B.
可以进行删除操作
C.
可以修改文件中的内容
D.
可以将文件复制至其它存储中
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举一反三
【多选题】Select the factors that should be considered In the selection of machining method of a surface.
A.
the design and processing features
B.
machining accuracy
C.
workpiece material and heat treatment
D.
available production conditions and technical level in workshop
【单选题】Eletrochemical machining. electrical discharge machining. and laser-beam machining are
A.
common processes
B.
uinconventional processes
C.
traditonal processes
【单选题】It is obvious that in machining the NC machine saves a considerable amount of time and improves the accuracy of ________.
A.
rotating operation
B.
machining operation
C.
horizontal operation
D.
manual operation
【判断题】the guideway surface should have a small and even machining allowance in machining
A.
正确
B.
错误
【单选题】We should loads pallet 1 into the ________ for machining purposes.
A.
machining compartment
B.
loading station
C.
working area
D.
office area
【简答题】Machining quality includes machining accuracy and .
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