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【单选题】
在一个表中最多可以有多少个主键A.
1个
B.
没有限制
C.
每个列都可以建一个，
D.
2个
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反馈参考答案：
举一反三
【单选题】The documentary collection is a kind of ( ).
A.
remittance way
B.
method to ensure that exporter can get payment
C.
commercial credit of payment
D.
way that exporter provide financing to importer
【单选题】The collection is a kind of ( )
A.
remittance way
B.
method to ensure the exporter can gen payment
C.
commercial credit of payment
D.
way that exporter provide financing to importer
【简答题】Which means of international payment is a kind of banker’s credit?A. Remittance. B. Collection. C. L/C. D. D/D
【单选题】The short-answer test is a kind of____between the composition and selection types.
A.
mixture
B.
collection
C.
compound
D.
compromise
【单选题】Which means of international payment is a kind of bank credit?
A.
remittance
B.
collection
C.
L/C
D.
D/D
【单选题】Which kind of collection is very risky for the seller?
A.
D/A
B.
D/P at sight
C.
D/P after sight
D.
D/P
【单选题】The clean collection is a kind of collection accompanied by ( ) documents only.
A.
commercial
B.
governmental
C.
non-governmental
D.
financial
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