题目内容

The preface to the second edition of ______is in fact a manifesto for English Romanticism.

A. Kubla Khan
B. Don Juan
C. Ode to the West Wind
D. Lyrical Ballads

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夹具设计中一般只涉及到( )。

A. 辅助基准
B. 工序基准和定位基准
C. 测量基准
D. 装配基准

According to Bacon, facts______.

A. are determined by observations
B. can only be understood through logical reasoning
C. have a hierarchy
D. are gathered by illiterate assistants

橡胶材料除了具有一般非金属材料所共有导热性差、强度低等特点外,还有( )极大的特点。

A. 弹性
B. 塑性
C. 韧性
D. 刚性

车床夹具的( )要跟支承件对应,这是防止工件装夹变形的保证。

A. 夹紧力
B. 轴向力
C. 辅助支承
D. 周向力

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