... I Q Symbole v STD .IEC 60 255 -5- ENGL ZOO0 60 255 -5 O IEC: 2000 -41 4644891 O747999 56 5 - The test voltage shall be substantially sinusoidal and at a frequency between 45 H t and 65 Hz However, by ... specified in IEC 60 255 -21- , IEC 60 255 -21-2 andIEC 60 255 -21 -3 also apply COPYRIGHT International Electrotechnical Commission Licensed by Information Handling Services S T D - I E C 60 255 -5- ENGL 0 W ... 63 6,3 8 200 0,04 0.4 0,63 0,42 250 0 ,56 0 ,56 1, 25 2,s 320 0. 75 1,6 0, 75 32 400 1 1 35 63 10 12 .5 500 23 12 ,5 16 630 1,8 32 6,3 10 16 20 800 2,4 12 ,5 20 25 16 25 32 O00 ' 32 10 10 NOTE For circuits...
... clause 54 2 of IEC 60364 -5- 54 and with 54 8.7 .5. 2 and 54 8.7 .5. 3 below 54 8.7 .5. 2 Size of functional earthing conductor The functional earthing conductor shall copper or equivalent conductance 54 8.7 .5. 3 ... the requirements of IEC 60364-4-41 andIEC 60364 -5- 54 (see sections 54 2, 54 3, 54 4, 54 6 and 54 7) However, additional provisions may be necessary to ensure that the equipment and the installation ... or functional-earthing and protective conductors conduct d.c current requirements the according to clause 51 2.2 of IEC 60364 -5- 51 suband clause 54 2.1.3 of IEC 60364 -5- 54 for preventing electrolytic...
... full-text and images of U.S., European, and Japanese Patents since 1974 To locate international standards literature from sector standards organizations, government agencies, and international standards ... Standards and Patents The vast literature of standards and patents is too diffusely distributed for all but a highly specialized library Consult the reference librarian Indexes to the patent and ... places to stop and restart 96 Design of Page and Screen Highlighting Use document highlighting devices consistently but sparingly Bold or italic type, color, and symbols such as arrows and boxes...
... TELEPHONE First, lift the receiver, and listen to the dial tone Next, insert your phone card in the slot Then press the number you require Wait until you hear the long pips This means that your call ... TELEPHONE First, lift the receiver, and listen to the dial tone Next, insert your phone card in the slot Then press the number you require Wait until you hear the long pips This means that your call ... remote control Use the picture and the questions above as suggestions - If you want to operate a TV with a remote control, you must make sure that the cord is plugged in and the main is turned on...
... decided to .and his son became 4.When his son invited he didn’t know but he was too shy The son told him a lot that he didn’t understand so his memory refused After a few lessons he .and made an ... we should leave the lesson for another day Since anything then I haven’t said (5) .about the computer to my son and my secretary Answer these questions Was the man worried when his son bought ... understand about the computer The man understood the lesson very well The man continued to learn how to use a computer after a few lessons X X X X Task 2: Listen to the old man’s story again and...
... day Since then I anything haven’t said (5) about computer to my son and my secretary Key RETELL STORY Retell the story of the old company director and his experience of learning how to use ... to learn because he told me a lot of things that I really didn’t understand at all refused Next Task 2: Listen and write in the missing words After a few lessons I began to feel tired I made ... didn’t understand about the computer The man understood the lesson very well The man continued to learn how to use a computer after a few lessons T F Task 2: Listen and write in the...
... school? … homework? Eg: S1.How often Ba and Lan go to the zoo? S2.They sometimes go to the zoo Unit 12: Lesson 5: C1-4/ p.130-131 II Reading: Read the text: Ba and Lan sometimes go to the zoo They ... They always walk to school and they are never late They always their homework Unit 12: Lesson 5: C1-4/ p.130-131 II Reading: Answer the questions: a How often Ba and Lan go to the zoo? sometimes ... sometimes:thØnh tho¶ng - never: kh«ng bao giê Unit 12: Lesson 5: C1-4/ p.130-131 II Reading: Listen to the tape: Unit 12: Lesson 5: C1-4/ p.130-131 II Reading: How often they… Grid: never sometimes...
... How are you? See you Are you OK? 2moro B4 2nite G9 Tomorrow Before Tonight Goodnight Unit 5: Technology and you B - Speaking I Vocabulary: Fax machine Air conditioner Electronic cooker To transmit ... me what the cell phoneis _ used for? communicate B Well, it is used to and exchange information Look and speak: - Listen (news/music) learn ( foreign languages) - Watch (news/performances/football ... To transmit = to send Truyền, dẫn To hold a meeting = to organize a meeting Tổ chức họp Task Ask and answer about the new inventions in pairs: a cell phone A Have you got ? B Yes, I have A...
... species of flora and _ 450 species of fauna Nguyen Hue’s army was stationed in Quen Voi surprise attack before it made its on Thang Long Task 2: Listen again and answer the following ... belong to? How far is it from Hanoi to Cuc Phuong? What many people come to Cuc Phuong for? When did Nguyen Hue defeat the Qing invaders? What the Muong ethnic minority in Cuc Phuong It’s belongs ... minority (n) : dân tộc thiểu số fauna (n) : hệ động vật enemy (n) : đối thủ, kẻ thù Task Listen and fill in the missing information: Cuc Phuong National Park was officially opened in _ 1960...
... a computer to help us in our daily life? It helps us visit shops, office and places of interests, pay bills, read newspapers, receive letters Why is a computer a miraculous device ? Because it ... mysterious way d.the physical part of the computer system e places where the scenes are interesting and beautiful TASK 2: Passage Headings Decide which of the three options below is the best title ... Because it is capable of doing anything you ask; it can speed up the calculations, allow you to pyte and print any kind of document… TASK 4: Discussion Discuss other uses of the computer in our daily...
... Unit 5: The Media Lesson 2: Speak and listen How can people get information? + reading newspapers + watching TV + listening to the radio + using the Internet Unit 5: The Media Lesson 2: Speak and ... …………… Radio and newsreel (c) ……… In the 1 950 s Television became popular Mid -and late 1990s The Internet (d)…… … became a major force in journalism Unit 5: The Media Lesson 2: Speak and listen ... foreign films, you? Unit 5: The Media Lesson 2: Speak and listen Unit 5: The Media Lesson 2: Speak and listen Work in pair, make the same dialogue Talk about the programs you like and dislike A: You...
... offices, and places of beauty with the help of computers We play bills and prepared by computers We read newspapers and magazines which have been produced on computers We receive letters from and ... and divide with lightning speed and perfect accuracy It is an electronic storage device which manages large collections of data It is a magical typewriter which allows you to type and print and ... the help of computers And we can even learn foreign languages on computers What makes a computer such a miraculous device? Each time you turn it on, with appropriate hardware and software, it is...
... Unit 5: Work and play Period 29 : Lesson4: B1+ B2 (P56) Listen and read Recess (n) Unit 5: Work and play Period 29 : Lesson4: B1+ B2 (P56) Listen and read Play blindman’s bluff (n) Unit 5: Work and ... B2 (P56) Listen and read Bell (n) Unit 5: Work and Period 29 : Lesson4: B1+ B2 (P56) play Listen and read Play marbles (v) Unit 5: Work and Period 29 : Lesson4: B1+ B2 (P56) play Listen and read ... (v) Unit 5: Work and play Period 29 : Lesson4: B1+ B2 (P56) Listen and read Play catch (v) Unit 5: Work and Period 29 : Lesson4: B1+ B2 (P56) play Listen and read Chat (v) Unit 5: Work and Period...