第5题
第6题
It is an irrevocable letter of credit which can not ().
A.change
B.be changed
C.changing
D.changed
第7题
The payment is made by an irrevocable()letter of credit in our favor.
A、 light
B、 bright
C、 sight
第8题
第9题
It is an irrevocable letter of credit which can not().
A.change
B.be changed
C.changing
D.changed
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