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问题 问答题

基序(motif)

答案

参考答案：蛋白质分予中以特定几何图形排列的二级结构单位，又称超二级结构(supersecondary structure)。例如，α-螺旋-转角-α-螺旋，α-螺旋-β-片层-α-螺旋。

多项选择题

外汇交易是交易双方通过电话或者一个电子交易网络而达成的，外汇市场全天24小时开放，外汇交易者可以对无论是白天或者晚上发生的全球经济、社会和政治事件而导致的汇价波动随时作出反应。传统型外汇交易业务包括（）。

A.即期外汇交易

B.远期外汇交易

C.掉期外汇交易

D.衍生型外汇交易

E.以上答案都是
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单项选择题

When anyone opens a current account at a bank, he is lending the bank money. He may (1) the repayment of the money at any time, either (2) cash or by drawing a check in favor of another person. (3) , the banker customer relationship is that of debtor and creditor who is (4) depending on whether the customer’s account is (5) credit or is overdrawn. But, in (6) to that basically simple concept," the bank and its customer (7) a large number of obligations to one another. Many of these obligations can give (8) to problems and complications but a bank customer, unlike, say, a buyer of goods, cannot complain that the law is (9) against him.

The bank must (10) its customer’s instructions, and not those of anyone else. (11) , for example, a customer opens an account, he instructs the bank to debit his account only in (12) of checks drawn by himself. He gives the bank (13) of his signature, and there is a very firm rule that the bank has no right or (14) to pay out a customer’s money (15) a check on which its customer’s signature has been (16) . It makes no difference that the forgery may have been a very (17) one, the bank must recognize its customer’s signature. For this reason there is no (18) to the customer in the practice, (19) by banks, of printing the customer’s name on his checks. If this (20) forgery, it is the bank that will lose, not the customer.

18（）

A.risk

B.guarantee

C.fault

D.benefit
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