At an auction, a bidder may get an item at a low price if he______.
A. beats others in the bidding
B. promises to sell the item again later
C. can fix a "reserve" price
D. reaches some agreement beforehand with other prospective buyers
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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
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