壳斗

某地区的手机收费有两种方式用户可任选其一：A、月租费20元，0.25元/分；B、月租费25元，0.20元/分．

（1）某用户某月打手机x小时，请你写出两种方式下该用户应交付的费用；

（2）若某用户估计一个月内打手机时间为25小时，你认为采用哪种方式更合算．

患者，某女，46岁，颈项部疼痛1年，双上肢麻木无力8个月。查体有颈部运动受限，腱反射减弱。颅颈侧位片示枢椎齿状突超过腭枕线3.5mm，本病最可能诊断为

A．小脑扁桃体疝
B．扁平颅底
C．颅底凹陷症
D．颈椎病
E．椎管内肿瘤

Dudu is a keen birdwatcher whose house is near a dam on which some rare birds have taken up residence. Unfortunately her neighbour’s wall and large tree prevented her from getting a good view of the dam.She entered into a contract with Jabulani to build a special 12-metre high observation tower that would enable her to see the dam. It had to be at least 12 metres high to give her an unobstructed view of the dam. Unknown to Jabulani, Dudu also entered into an agreement with Diskom (Pty) Ltd to permit them to use the tower to transmit their cellular phone signals. The agreement provided that Dudu would be paid P20,000·00 on installation, and an annual rent of P10,000·00 per year.When the tower was finished it was only 10 metres high and, although Dudu could see over the wall, the tree still partially obscured her view. Also, the height of the tower was too low for Diskom (Pty) Ltd to make use of it.As it stands the tower cost P30,000·00. Had Jabulani built it to the specified height it would only have cost a further P2,000·00. However, because of the special construction its height cannot now be increased.Required:Analyse the rights that Dudu has in contract law against Jabulani.In particular advise her with regard to:

(a) whether she can get an order for specific performance to require Jabulani to rebuild the tower; and (5 marks)

Windows 98提供了多种网络连接功能和网络应用软件。在下列有关Windows 98网络通信功能的叙述中，正确的是( )。

A．应用程序可以通过使用Windows API来调用Windows 98提供的网络通信功能

B．无论PC机配置如何，Windows 98一经安装即会自动地安装TCP/IP协议

C．使用Windows 98的PC机只能作为客户机使用，不能作为任何形式的服务器

D．Windows 98与Windows 98SE均提供Internet连接共享功能

震源到地球表面的垂直距离叫震中矩。