在纸币制度下，如果在同一市场上出现两种以上纸币流通时，会出现货币的（）。
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Diesel engine main and connecting rod precision bearings are made in halvesEach half exceeds one-half the bearing circumference by a small amountThe small amount is termed （）.
A. clearance
B. crush
C. pitch
D. thrust
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