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问题 多项选择题

期货交易所的特性主要包括( )。

A．高度系统性

B．高度严密性

C．高度组织化

D．高度规范化

答案

参考答案：A,B,C,D

解析： 在现代市场经济条件下，期货交易所是一种具有高度系统性和严密性、高度组织化和规范化的交易服务组织。

单项选择题

下面哪种肿瘤最常侵犯颅骨

A．胶质细胞瘤

B．松果体瘤

C．脑膜瘤

D．血管瘤

E．神经纤维瘤
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单项选择题 共用题干题

● A glue that holds the whole Internet together is the network layer protocol, (71)．Unlike most older network layer protocols, it was designed from the beginning with internetworking in mind．Its job is to provide a (72) way to transport datagrams from source to destination，without regard to whether these machines are on the same network or whether there are other networks in between them． Communication in the Internet works as follows．The (73) layer takes data streams and breaks them up into datagrams．Each datagram is transmitted through the Internet, possibly being fragmented into smaller units as it goes．When all the pieces finally get to the destination machine, they are reassembled by the (74) layer into the original datagram．This datagram is then handed to the transport layer, which inserts it into the receiving process’ input stream． An IP datagram consists of a header part and a text part．The header has a (75) part and a variable length optional part．

空白处（72）应选择（）

A.best-quality

B.quality-guaranteed

C.connection-oriented

D.best-efforts
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