同步发电机在（）运行时，电枢反应的作用很小。 A.正常 B.空载 C.过载 D.短路

不可抗力作为合同免责理由应符合的条件

Farmers,as we all know,have been having a hard time of it lately,and have turned

to new ways of earning income from their land.This involves not only planting new kinds of crops,but some__55 ways of making money,the most unusual of which has got to be sheep racing.Yes,you heard me__56  !A farmer now holds sheep races on a regular basis,and during the past year over 100,000 people have __57  to watch the race.“I was passing the farm on my way to the sea for a holiday,"one punter (赛马经纪人)told me,“and I thought I'd have a look.I didn't believe it was serious to tell you the truth."According to a regular visitor,betting on sheep is more interesting than betting on horses.“At proper horse races everyone has already studied the form of the horse __58  ,and there are clear favourites. __59  nobody has heard anything about these _60  !Most people find it difficult to tell one from another in any

case."I stayed to watch the races,and I must admit that I found it quite__61  . In

a usual sheep race,half a dozen sheep race down hill over a course of about half a mile.Food is waiting for them at the other end of the__62  just to give them so

me encouragement,I ought to add!The sheep run surprisingly fast，__63 they have probably not eaten for a while.Anyway,the crowd around me were obviously enjoying

heir day out at the races, __64  by their happy faces and the sense of excitement.

55.A. common         B. strange            C. swift          D. illegal

56.A. honestly       B. surprisingly       C. completely     D. correctly

57.A. showed off     B. brought up         C. turned up      D. looked forward

58.A. behind time    B. in progress        C. in advance     D. in time 

59.A. But            B. Therefore          C. Moreover       D. Otherwise 

60.A.horses          B. sheep              C. races          D. stories

61.A.exciting        B. dangerous          C. boring         D. peculiar

62.A.race            B. hill               C. track          D. field

63.A.if              B. so                 C. yet            D. although

64.A.observing       B. judging            C. considering    D. inferring 

通常与电源相关的附加功能是（）；

A、与外部电源同步

B、输入低电压限制

C、输入高电压限制

D、紧急调电信号

某单位有一个100台机器的大机房，要实现每一台计算机都上网，一般认为，用代理是一个办法，但是工作量比较大，要为每一台机器分别安装客户端软件，而且还要设置IP地址、网关、DNS服务器等。此外，还有一个不错的方法，那就是建立NAT服务器，在服务器上配置 DNS和DHCP服务器，每个工作站只要做简单的设置就能自动接入Internet了，同时还能让网外的计算机直接访问内部网的特定计算机。 试简述如何组建局域网“NAT”服务器。

私房初始登记中已死亡的产权人的登记应如何办理？