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【多选题】
备用信用证的特点包括( )。A.
独立性
B.
强制性
C.
不可撤销性
D.
单据性
E.
应用广泛性
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举一反三
【简答题】Questions 19 to 21 are based on the passage you have just heard. 第19题：
【简答题】19-22Questions 19 to 22 are based on the conversation you just heard. 第19题：
【简答题】19-21 Questions 19 to 21 are based on the conversation you just heard. 第19题：
【简答题】A÷18=B…19______．
【单选题】Questions 19 to 22 are based on the conversation you have just heard.19.
A.
There was no effect.
B.
It improved operations.
C.
Operations became less efficient.
D.
The employees became dissatisfied.
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