你可能喜欢
A.、该行业中厂商的数量
B.、平均成本曲线的最低点
C.、厂商生产的产品与其竞争对手的产品的差异程度
D.、A和C
A.55-56℃,3小时
B.58-60℃,6小时
C.58-60℃,18小时
D.60-70℃,6小时
A.He wanted to show them off to his friends.
B.He just wanted to please his girlfriend.
C.He got a sense of security from his credit card.
D.He thought his job would help him to pay off.
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