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【单选题】
工序图中( )是数控与普通机械加工工序卡片的不同之处。A.
工步
B.
切削用量
C.
注明编程原点和对
D.
工时定额
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举一反三
【单选题】42 The surey was focused on
A.
the liing conditions of older physicians in the U. S.
B.
the career plans of older physicians in the U. S.
C.
the retirement plans of older physicians in the U. S.
D.
the achieements of older physicians in the U. S.
【单选题】What did young people in like to wear? [ ]
A.
the 1990'
B.
1990s
C.
the 1990
D.
the 1990s
【简答题】A)The 1940s. B)The 1950s. C)The 1970s D)The 1980s.
【单选题】The decline of the Greek aristocracy' s power in the sixth century B.C.was the result of______.
A.
the conflicts between the peasants and the landed aristocrats
B.
the foreign residents
C.
slaves
D.
the newly emerging middle class in the sixth century
【单选题】The figure given below shows a shift in the production-possibility curve of a country from AB to AC. Here, S 1 and C 1 are the initial production and consumption points respectively. S 2 and C 2 , on ...
A.
B.
C.
D.
D
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