编制如图6-2所示凹模线切割程序，采用3B代码格式，穿丝孔为O点，加工顺序O→A→B→C→D→E→F→A→O，选用钼丝直径为φ0.18mm，单边放电间隙δ=0.01mm。(尖角处不需加过渡圆弧)
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According to the passage, people were against the Vietnam War may be as a result of____________.
A. the influence of news broadcast on peoples emotions
B. the anger from the audiences of all nations
C. the extensive coverage of the War
D. the viewing of American armys cruel behaviors on TV
A.Her father.B.Her mother.C.Her brother,D.Her sister.
A. Her father.
B. Her mother.
C. Her brother,
D. Her sister.
在不兑现的信用货币制度下，货币发行权主要集中于（）。
A. 中央银行
B. 贸易部门
C. 财政部
D. 投资银行
为了提高冷冲模具结构工艺性，设计模具时必须考虑的主要原则有什么？
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