14 Alpha buys goods from Beta. At 30 June 2005 Beta’s account in Alpha’s records showed $5,700 owing to Beta.

B．eta submitted a statement to Alpha as at the same date showing a balance due of $5,200.

Which of the following could account fully for the difference?

A． Alpha has sent a cheque to Beta for $500 which has not yet been received by Beta.

B． The credit side of Beta’s account in Alpha’s records has been undercast by $500.

C． An invoice for $250 from Beta has been treated in Alpha’s records as if it had been a credit note.

D． Beta has issued a credit note for $500 to Alpha which Alpha has not yet received.

[单选题]设α、β、γ都是非零向量，α×β=α×γ，则（）。A . AB . BC . CD . D

[主观题]My mother________（常常）buys food from the store．

[单选题]具有△αβ，γδ-δ-内酯环的强心苷元，在UV光谱中的最大吸收是A．217～220nmB．270～278nmC． 295～300nmD．300～330nmE．217～220nm, 270nm

[问答题] 什么是Alpha测试、Beta测试？

[问答题] Alpha测试与beta的区别？

[问答题] 定义alpha测试和beta测试的区别。

[单选题]“X buys something from Y” and“Y sells something to X” are in a relation of

[单选题]分子中有△16 (17)与△αβ-γ-内酯环共轭的强心苷元，在UV光谱中的最大吸收是A．217～220nmB．270～278nmC． 295～300nmD．300～330nmE．217～220nm, 270nm

[问答题] 已知，求tan（α-2β）的值。

[试题](b) Misson has purchased goods from a foreign supplier for 8 million euros on 31 July 2006. At 31 October 2006,the trade payable was still outstanding and the goods were still held by Misson. Similarly Misson has sold goodsto a foreign customer for 4