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【单选题】
会使活塞移动时‘别颈’导致速度达不到规定值。A.
活塞杆与导向套配合间隙过小
B.
活塞杆与导向套配合间隙过大
C.
固定式缓冲装置中节流直径过小
D.
固定式缓冲装置中节流直径过大
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反馈参考答案：
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】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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