问题
单项选择题
( ) is generally accepted, L/C must be established 15 days before shipment.
A. It
B. As
C. That
D. What
答案
参考答案：B
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( ) is generally accepted, L/C must be established 15 days before shipment.
A. It
B. As
C. That
D. What
参考答案：B