【正文】 tom line is called the scratchpad or message line. In this line the MCDU gives messages to the operator such as select desired system which we have seen already.Exercise 1: Questions to the text1. How many lines does a display screen consist of?2. How many characters does a line maximally contain?3. What does the first line display?4. How are the 12 data lines arranged?5. Where are the LSK located?6. What is the purpose of the scratchpad?Exercise 2: Describe Fig 20 with what you have learned in the text. Speak as much as possible with your own words. Fig 20 MCDU DisplaySaid I Loved You .. .But I liedYou are the candle, love39。s the flameA fire that burns through wind and rainShining your light through the heart of mineTill the end of timeYou came to me like the dawn through the nightJust shining like the sunOut of my dreams and into my lifeYou are the one, you39。re the oneChorus:Said I loved you but I lied‘Cause this is more than love I feel insideSaid I loved you but I was wrong‘Cause love could never ever feel so strongSaid I loved you but I liedWith all my soul I39。ve tried in vainHow can mere words my heart explainThis taste of heaven so deep so trueI39。ve found in youSo many reasons in so many waysMy life has just begunNeed you forever, I need you to stayYou are the one, you39。re the oneChorusYou came to me like the dawn through the nightJust shining like the sunOut of my dreams and into my lifeYou are the one, your are the oneSaid I loved youBut this is more than love I feel insideSaid I loved you... But I liedLesson ElevenAir Conditioning systemPart T One: Read the following passage and memory as much as you can, and then describe the diagram below with your own words.The air supply es from the pneumatic system.The air conditioning system starts after the pack valve.The air is cooled by two or more identical packs. Basic temperature and humidity regulation are carried out in this area of the system.The air conditioning system then mixes cooled air with hot air to give the desired temperature in the conditioned partments.The air conditioning system also supplies the necessary cooling to panels, batteries and electronic racks by ventilating them with air.Finally, the conditioned air is distributed to the partments. The cabin and flight partment are pressurized to supply a pressure corresponding to all flight altitudes. This is regulated by the outflow valve.Exercise 1: Questions to the text1. Where does the air supply e from?2. How is the air cooled?3. Why are the cooled air and hot air mixed?4. What function does the air conditioning perform?5. Which system of the airplane can keep the proper pressurization corresponding to all flight altitudes?6. How is the pressure regulated?Exercise 2: Describe Fig 21, Speak as much as possible with your own words.Fig. 21 Air conditioning Lay OutPart T Two: Read the following passage and memory as much as you can, and then describe the diagram below with your own words.The air conditioning system must make sure of 5 physical characteristics.It must make sure that the air is fresh, clean, at a fortable temperature, at the correct humidity and at the correct pressure.Let’s look at each of these 5 characteristics in turn, the first one we will consider is freshness.There are regulations relating to freshness on board. These regulations state that there is a minimum of fresh air which must be supplied to the cabin.These regulations are stated in the FAR and JAR which determines the basic requirements for aircraft design.The regulations say that, on average, an acceptable limit of fresh air to be supplied is m3 per minute per person. This is about 0,35 kg per minute at sea level.The regulations, therefore, make it necessary that the whole of the cabin air be exchanged every 3 to 5 min, depending on the number of people in the aircraft. This means, for example, that a B747, which has a cabin volume of nearly 800 m 3 and 500 passenger seats, shifts a minimum 160 m3 of air in one minute.Exercise 1: Questions to the text1. What are the five characteristics that the air conditioning system has to keep?2. Which of the five, do you think, is the most important for the people to survive?3. What is the acceptable limit of fresh air?4. Where you can find the regulation?5. How often should the air of the cabin be changed?6. How many seats are there in a Boeing 747?Exercise 2: Describe Fig 22 with what you have learned in the text. Speak as much as possible with your own words.Fig. 22 Regulations for Air Freshness Lesson TwelveNavigationPart T One: Read the following passage and memory as much as you can, and then describe the diagram below with your own words.The aircraft has three axes. When we speak about different directions, it is the longitudinal axis that is the reference.You probably also remember from the pass system, that the earth has 2 north poles which unfortunately are not at the same location. One is the geographical North Pole and the direction to this pole is called true north or TN in short. The other is the magnetic north pole where the magnetic fieldlines are gathering.The direction to this pole is called magnetic north or MN in short. In our example the two directions are 10176。 apart.This difference between true and magnetic north is called variation, or var in short. It can be east or west.The direction in which the nose of the aircraft is pointing is called Heading, or HDG in short, and is measured clockwise from north.Because we have two north poles we must also have two headings dependent on the reference. One is called true heading, or TH in short and the other magnetic heading or MH.Exercise 1: Questions to