为客户提供各种票据、证券以及现金之间的互换机制，投资银行所发挥的作用是（）。
A.期限中介
B.风险中介
C.信息中斧
D.流动性中介
参考答案：D
工业企业的产品生产工程由四部分组成（）、（）、（）、（），其中核心是（）。
In the following essay,each blank has four choices．Choose the best answer and writedown on the answer sheet． Communicating via E—mail is by far the most common Internet activity．You can (71) with anyone in the world who has an Internet address or E—mail (72) with a systemconnection to the Intemet．All you need is (73) the Internet and an E—mail program．Two ofthe most widely used E．mail programs are Microsoft’s (74) and Netscape’S Navigator．Atypical E．mail message has three basic (75) ：header，message，and signature·
A．attach with B．grasp C．possess D．access to
