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【简答题】
A: How are we going to arrange payment for the goods? B: We’d like you to (1) ________________________________. A: Do you accept payment by D/A? B: I’m afraid not, because we don’t want to run the risk of losing money. A: When should we open the credit then? B: (2) ________________________________. A: How long should our L/C be valid? B: The L/C remains valid (3) ______________________________, and please indicate that the L/C is negotiable in our country. A: Can we pay for our imports in RMB? B: We would prefer that you (4) ________________________________. A: Could you tell me what documents you will provide with us? B: Along with the draft, we’ll also send you (5) ________________________________________________________________________________________________________________________________I think that’s all. A: Do you accept payment by installment? B: Yes, but we only adopt payment by installment for some special export items. A: Can we make payment by D/P if we order 800 electric irons from you? B: The total value of 800 irons amounts to 4,000 US dollars. Since the amount of this order is not big, we can accept payment by D/P, but (6) ________________________________. A: That’s understood. Thank you for the information.
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举一反三
【简答题】已知向量 a , b 满足 | a |=1 , | b |=2 , ( a - b )⊥ a ,则向量 a 与向量 b 的夹角为______.
【判断题】Cordova提供了一组设备相关的API,通过这组API,移动应用能够通过HTML技术访问原生的设备功能,如摄像头、麦克风等。
A.
正确
B.
错误
【单选题】向量 a,b 满足 ,则向量 a 与 b 的夹角为 (  )
A.
45°
B.
60°
C.
90°
D.
120°
【简答题】已知a,b两个非零向量,满足 ,则向量a与b 的夹角为 。
【简答题】已知非零向量a,b,c满足,向量a,b的夹角为120°,且|b|=2|a|求向量a与 c的夹角。
【单选题】可以认为水肿对机体的影响是
A.
水肿对机体的影响既有利又不利
B.
一般来说急性水肿对机体的影响较小
C.
水肿对机体的影响是利大于弊
D.
水肿对机体的影响是弊大于利
E.
慢性水肿对机体影响不大
【单选题】若向量 a , b 满足 ,则向量 a 与 b 的夹角等于(   )
A.
B.
C.
【简答题】设向量a、b满足:|a| ,|b| , ,则向量a与b的夹角为 .
【简答题】向量a,b满足 则a与b的夹角为 .
【简答题】已知非零向量 a 与 b 满足 a +3 b 与 7 a -5 b 互相垂直, a -4 b 与 7 a -2 b 互相垂直.求非零向量 a 与 b 的夹角.
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