正确的加工顺序应遵循前工序为后续工序准备（ ）的原则。
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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
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
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