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【简答题】数控系统通常分为车削和铣削两种，用于车削的数控系统在系列号后加字母T__。用于铣削的数控系统在系列号后加字母___。
【简答题】如下图所示零件，数控车削加工该零件外圆柱面时编程如下，试将该程序补充完整。 N10 G50 X______ Z28.0 N20 G00 X40.0 Z______ N30 G______ X40.0 Z-52.0 F0.15 N40 G00 X50.0 Z______ N50 G00 X82.0 Z______
【单选题】数控车削时,N10 G90 X35.0 Z20.0 F50指令含义为()
A.
轴径70的单一外圆柱切削循环加工
B.
轴径35的外圆柱切削多重复合循环加工
C.
轴径70的外圆柱切削多重复合循环加工
D.
轴径35的单一外圆切削循环加工
【单选题】Most scientists believe it is ______ to use animals in medical research.
A.
legitimate
B.
explicit
C.
edible
D.
illiterate
【单选题】What method does the author mainly use in the passage to achieve better effects?
A.
Examples.
B.
Listing.
C.
Comparisons and listing.
D.
Analysis and examples.
【简答题】The following statements are examples of excessive use of euphemism. How to improve them? Examples of excessive use of euphemism: (1)The employees who had been notified of an interruption in their emp...
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