执行理财规划方案的原则有（）。 A.目标明确 B.了解原则 C.诚信原则 D.连续性

一台空气能可以供多少人使用？

学生票寒假限定时间为12月1日至3月31日、暑假限定时间为6月1日至9月30日，其他时间不发售学生票。（部竞赛题）

审计人员对内部控制进行调查后，不可以采用的描述内部控制的方法是（）。

A、文字说明法

B、调查表法

C、流程图法

D、录像与录音法

Networks can be interconnected by different devices in the physical layer networks can be connected by (71) or hubs．which just move the bits from one network to an identical network．One layer up we find bridges and switches which operate at data link layer．They can accept (72) ，examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process in me network layer，we have routers that can connect two networks，If two networks have (73) network layer，the router may be able to translate betweenthe packer formats．In the transport layer we find transport gateway，which can interface between two transport connections Finally，in the application layer，application gateways translate message (74) ．As an example，gateways between Internet e-mail and X，400 e-mail must (75) thee-mail message and change various header fields．

A．special

B．dependent

C．similar

D．dissimilar