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病程长来势缓者为

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Customers trading abroad in foreign currencies may protect against the exchange risk by arranging______.

A. a contract of international sale of goods
B. a contract of marine insurance
C. a forward contract to fix the exchange rate in advance
D. a contract for the delivery of goods by instalments

两班制生产的设备约()个月进行一次定期维护。

A. 1
B. 2
C. 3
D. 4

企业对不重要的交易或事项采用新的会计政策,不作为会计政策变更处理。()

A. 正确
B. 错误

此病发展过程中不可能出现

A. 呼吸肌麻痹
B. 吞咽困难
C. 脑神经麻痹
D. 病理征阳性
E. 心律失常

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