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牙体外层覆盖、发挥咀嚼功能的主要部分为

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【C20】______

A. check
B. money
C. changes
D. cash

【C5】______

A. but
B. however
C. meanwhile
D. besides

Who are the first to bear financial losses incurred by the bank？______.

A. The depositors
B. The debtors
C. The bank capital shareholders
D. The bank employees

需求收入弹性是用以衡量消费者收入变化的比率所引起的商品需求量变动的比率,它反映了需求对收入的反应程度。()

A. 正确
B. 错误