问题 问答题 简答题

简述控制器类设备的安装要求。

答案

参考答案:

控制器类设备主要包括火灾报警控制器、区域显示器、消防联动控制器、可燃气体报警控制器、电气火灾监控器、气体(泡沫)灭火控制器、消防控制室图形显示装置、火灾报警传输设备或用户信息传输装置、防火门监控器等设备。

(1)控制器类设备在消防控制室内的布置要求:①设备面盘前的操作距离,单列布置时不应小于1.5m,双列布置时不应小于2m。②在值班人员经常工作的一面,设备面盘至墙的距离不应小于3m。③设备面盘后的维修距离不宜小于1m。:④设备面盘的排列长度大于4m时,其两端应设置宽度不小于1m的通道。⑤与建筑内其他弱电系统合用的消防控制室内,消防设备应集中设置,并应与其他设备间有明显间隔。

(2)控制器类设备采用壁挂方式安装时,其主显示屏髙度宜为1.5~1.8m;其靠近门轴的侧面距离不应小于0.5m,正面操作距离不应小于1.2m;落地安装时,其底边宜高出地(楼)面0.1~0.2m。

(3)控制器应安装牢固,不应倾斜;安装在轻质墙上时,应采取加周措施。

(4)引入控制器的电缆或导线的安装要求:①配线应整齐,不宜交叉,并应固定牢靠。②电缆芯线和所配导线的端部,均应标明编号,并与图纸一致,字迹应清晰且不易退色。③端子板的每个接线端,接线不得超过2根,电缆芯线和导线,应留有不小于200mm的余量并应绑扎成束。④导线穿管、线槽后,应将管口、槽口封堵。

(5)控制器的主电源应有明显的永久性标志,并应直接与消防电源连接,严禁使用电源插头。控制器与其外接备用电源之间应直接连接。

(6)控制器的接地应牢固,并有明显的永久性标志。

阅读理解
阅读理解。
        We have known for a long time that flowers of different plants open and close at different time of day.
This is so familiar that there seems to be no need to ask the reason for it. Yet no one really understands why
flowers open and close like this at particular times. The process (过程) is not as simple as we might think, as
recent experiments have shown. In one study, flowers were kept in constant (连续的) darkness. We might
expect that the flowers, without any information about the time of day, did not open as they normally do. In
fact, they continued to open at their usual time. This suggests that they have some mysterious (神秘的) way
of knowing the time. Their sense of time does not depend on information from the outside world; it is, so to
speak, inside them, a kind of "inner clock".
         This discovery (发现) may not seem to be very important. However, it was later found that not just
plants but also animals -including man -have this "inner clock" which controls the working of their bodies and
influences (影响) their activities. Men, then, are also influenced by this mysterious power. Whether we wish
it or not, it affects such things in our life as our need for sleep, our need for food.
         In the past, this did not matter very much because people lived in natural condition. In the modern
world, things are different; now there are spacemen, airplane pilots and, in ordinary life, a lot of people who
have to work at night. It would be very useful, then, to know more about the "inner clock". Such ordinary
things as flowers might help us understand more about ourselves.
1. A recent experiment showed that _______.
[ ]
A. different flowers open and close at different times of day
B. for their opening and closing, flowers do not need information from the outside world
C. flowers are influenced by weak light even when they are in a dark room
D. flowers can be used for telling the time
2. The "inner clock" _______.
[ ]
A. is an unimportant discovery
B. is only found in animals
C. has not been understood by far
D. has an effect on human life
3. Further study of the "inner clock" will be useful because             .
[ ]
A. it might help us in some way
B. we do not yet understand plants and animals well enough
C. the number of spacemen and airplane pilots is fast increasing
D. we should try to live more naturally than we do now
4. Kept in constant darkness, flowers _______.
[ ]
A. will not open or close as usua
B. will not open any longer
C. will open as they do in natural conditions
D. will always remain in full blossom (开花)
5. ______ have a mysterious power of knowing time without information from the outside world.
[ ]
A. Animals including man as well as plants
B. All living things except man
C. Flowers are the only things in the world that
D. Neither animals nor plants
单项选择题 案例分析题