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【单选题】
数控编程根据ISO标准，数控机床在编程时采用（）规则。A.
刀具相对静止，工件运动
B.
工件相对静止，刀具运动
C.
按实际运动情况确定
D.
按坐标系确定
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反馈参考答案：
举一反三
【简答题】收入弹性(income elasticity)
【简答题】期权弹性(option elasticity)
【简答题】弹性论(Elasticity Approach)
【单选题】If the short run elasticity of supply for a product is 0.8, in the long run elasticity, supply:
A.
Is inelastic.
B.
Is unit elastic.
C.
Is inelastic.
D.
Any of the above could be true of the product’s long run elasticity of supply.
【单选题】The difference between slope and elasticity is that_________.
A.
slope is a ratio of two percentage changes, and elasticity is a ratio of two changes
B.
slope is a ratio of two changes, and elasticity is a ratio of two percentage changes
C.
none of the above; there is no difference between slope and elasticity
D.
slope measures changes in quantity demanded more accurately than elasticity
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