停电检修英语

A: music annexAnnex ii: backlogAnnex iii: backlogAnnex 4: backlogAttachment 1: you have five: hello, XX performance start, performance, the performance time place XX XX, please fellow tourists will appreciate, TV crew of the national site wishing you visit!Attachment 6:2: hello, dear visitors because of XX (equipment maintenance/power/weather condition, etc.), scheduled for XX: XX points in XX staged performances, temporary cancellation of XX for your inconvenience! State TV park staff wish your visit!(3) : hello, dear visitors because of XX (equipment maintenance/power/weather condition, etc.), scheduled for XX: XX points in XX staged performances change to XX: XX in XX, XX points for your inconvenience! State TV park staff wish your visit!Annex 7:4 fellow tourists, hello! Welcome to national park, TV, in order to facilitate due to weather mutations shelter, please everybody tourist visitors to site the sequential under shelter: the tourist center etc in indoor rain. (rainy days notice)5 fellow tourists, hello! Welcome to national park, because of TV, so visitors recently snow videotapes, attention, don't slippery feet hurt, prevent chasing. (snow days notice)[6] hello, dear visitors! Popular TV park countries. Due to the weather today, in order to ensure safety mutations visitors, please don't stand in the slope and the visitors on the high buildings, trees, or not in the eaves, in case of lightning strikes. Thunder (advise)Annex 8 (7), fellow tourists, hello! In the park, please fire XXX friends don't panic, according to the working personnel of command, orderly evacuation passageway and safety, thank you for your cooperation! (fire),(8), fellow tourists, hello! Welcome to national park, TV due to hardware failure zone, pavement, in order to facilitate visitors obstacles in, please fellow tourists around XXX, forget all visitors understanding, thank you for your cooperation! (the leakage, landslides, earthquake or other disaster)(9), tourist friend hello! Welcome you to visit the park state TV! Due to mechanical trouble, XXX, we can supply friend understanding! (power),(10), fellow tourists hello! In the park, please gas leak happened by friends don't panic, staff and orderly evacuation passages from safety, thank you for your cooperation!(11) : hello, dear visitors! Welcome to TV national park! For you and your family can have a pleasant journey, please watch your children, and your belongings, in order to avoid the loss. State TV park staff wish your visit!(12) and fellow tourists hello! Welcome to TV national park! Because the area is large, if you wanted to find in the journey, please call our hotline - as soon as possible, for you will give full radio, please. Famen temple staff wish your visit!(13), fellow tourists hello! Because electricity blackout emergency, performance, please everyone audience interrupted, don't walk around in sit and watch his belongings, lest cause unnecessary damage. We will be resumed as soon as possible, bring you inconvenience! Thank you for your cooperation. !(14) and * *, sir/madam, please come after broadcast sheet, your office door tourists are waiting for the family.(15), fellow tourists hello! Welcome to TV national park! Because of the road has tree-lined square on both sides of the sculpture shows, please fellow tourists don't climb on you, lest cause unnecessary damage! State TV park staff wish your visit!Annex 9: backlog

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The electrical power system by the electricity generation, the electric transmission, the power distribution and so on several parts is composed, loses, electrical power distribution system's function is the use suitable voltage class gives the electrical energy transportation the end-user. The electric power production's main purpose is to satisfy the user to the electrical energy quantity and the quality demand. Along with our country electrical power system's development, electrical power system's scale is getting bigger and bigger, the electric transmission rank is getting higher and higher, the electric transmission is away from is getting more and more far, the transmission power is getting bigger and bigger, the power supply scope is also getting more and more broad, the modernized relay protection and the safety device are getting more and more complex. The power supply interrupt will cause the halt in production, the life chaotic even to endanger the person and the equipment security, forms the very serious consequence. Power cut the loss which the national economy creates for surpasses electrical power system's loss far. Therefore, the electrical power system movement first needs to satisfy the power supply which reliable, continues. The fail-safe analysis uses in appraising the system structure the reliability, it not only need compare the reliable relative level, moreover must appraise provides some kind of specific reliable level the expense. Redundant reliable and between the low operating cost cost has the contradictory relations, solves this problem to need coordinated to carry on electrical network's reliable optimization through the reliable cost - benefit analysis. Electrical network's reliable cost may define for the power supply department to enable the electrical network to achieve the certain power supply reliable level, but needs to increase run cost; Because the reliable income may define for the electrical network achieves the certain power supply reliable level to cause the benefit which the user obtains. Because under some power supply reliable level's society, the economic efficiency are difficult to estimate, therefore only made the indirect qualitative appraisal in the past to the reliable income, carried on the reliable optimization like this with difficulty. For ease of the weight and the computation, this article with lacks the reliable benefit the electricity cost, i.e., because the electrical power system electric power power supply insufficiency or the interrupt cause the user to lack the economic loss which the electricity, the power cut create to express. In the unit lacks in the electricity cost invariable situation, lacks the electricity cost to be lower, the reliable benefit is higher. Thus, may unifies the reliable cost and the reliable benefit in electrical network's efficiency weighs, carries on the electrical network turnaround plan through the reliable cost - benefit analysis the establishment. The fail-safe analysis may also use in formulating the reliable management policy and the policy, for example provides the reliable level which requests for each kind of user's reliable level or some load level. The guarantee supplies power reliably continuously to each kind of user, has been the question which the electrical power system dispatch movement and the way analysis pay attention, and as a weight electrical power system performance important criterion. But because the power equipment has the breakdown randomness and the power cut overhaul as well as the current economic condition restraint, to the user power supply reliable in fact is absolutely impossible, can only be the formulation corresponding reliable standard, electrical power system's reliable control in reasonable scope. Power equipment's overhaul suspends shipment involves many aspects the questions, the plan arrangement not, when will bring many disadvantageous influences. Speaking of the economic aspect, will create the user and power supply department own heavy loss; Speaking of the system safety, because of cuts power, but the load transfer to other transformer substations, will have increased other transformer substation logical 'OR' circuit load possibility, this question when peak load is more prominent. Along with computer technology's development, the energy management system management system (EMS) day by day widespread application, the power distribution management system management system (DMS) development as well as they with the GIS union, have provided the solid foundation for the electrical network turnaround plan's optimization.The traditional turnaround plan take the plan comparison as a foundation, this method is from depends on several feasible plans which the experience produces to choose a best plan through the technical economy comparison to take the operation plan. Because these plans have the congenital flaw, is by the plan establishments of strength proposed subjectively, not necessarily includes the synergy objectively, therefore the final plan contains quite many subjective factors and the limitation. Along with science's and technology's development and rapidly expand's electric power enterprise's need, the power equipment which the electrical network uses more and more diverse, electrical power system's structure day by day is also complex, the transformer substation and the electrical network synthesis automation technology obtained the fast development. On the other hand, the user is also diversifies day by day to the power supply request, is also getting higher and higher to the power supply reliable request. These factors brought many difficulties for electrical power system's equipment power cut overhaul, traditional plan establishment method oneself adapted the recent development with difficulty In this case, how to raise electrical power system's turnaround plan establishment level to become an urgent duty. Along with the computer in electrical power system's widespread application as well as the systems engineering, the operations research and so on scientific field's achievement, has provided the solid foundation for the improvement electrical power system turnaround plan level. The electrical network turnaround plan optimizes the goal is determined overall any plan is most advantageous to the electrical power system and the user, this requests us from all possible

我住在一栋楼的12层。一天下午，我正从朋友家里回来，当时是4点多钟，我快速走进电梯，按下了12按钮。电梯开始上升，但是很慢。然后上到一半的时候，突然在停在了两层中间，我不明白怎么回事，我按了1~14楼的所有按钮，我大声地喊救命。但是没有人回应。突然灯灭了，我孤零零地呆在黑暗中。我开始哭敲打着电梯的墙壁。我哭啊喊啊直到哭不动了，我感到那么无助。我张开手按动所有的按钮，就在这时，远处有铃声，一直在响，是火灾报警。我想这栋楼着火了。我对上帝说，“带我离开这里吧，我再也不做坏事了”。就在这时，我意识到电梯开始动了。到了一楼停住了，门开了。一个男士站在了那里。“你在电梯里呆多久了？好在你按动了报警按钮。你在学校没有学过吗？”他指了指电梯里面墙上的一张小纸片。上面写着：“注意，这个电梯将在3月13日周四下午4点到5点停电检修”。