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【单选题】
The issuing bank wants to cancel a letter of credit before it has been advised to the beneficiary by the advising bank. What is the option available to the issuing bank?A.
The issuing bank may cancel the L/C anytime.
B.
The issuing bank should seek permission from the advising bank.
C.
The issuing bank must recall the L/C from the advising bank.
D.
The issuing bank must obtain the consent of the beneficiary.
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举一反三
【单选题】已知数列a n 是等差数列，S n 是a n 的前n项和，a 3 +a 4 +a 5 =-6，a 8 =6，则（ ）
A.
S 6 ＜S 5
B.
S 5 =0
C.
S 6 =S 5
D.
S 11 =22
【单选题】已知递增的等差数列{a n }中，a 2 =-a 9 ，S n 是数列{a n }的前n项和，则（ ）
A.
S 10 ＜0
B.
S 5 ＜S 6
C.
S 5 ＞S 6
D.
S 5 =S 6
【简答题】三北方向包括 、 和 方向。(每空两个字)
【简答题】A．P(S3)P(S4)和V(S5)V(S6) B．V(S5)V(S6)和P(S5)P(S6) C．P(S2)P(S5)和P(S4)P(S6) D．P(S4)V(S5)和P(S5)V(S6)
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