Why is there only one referee running on the court instead of two?

Olympic etiquette 18 1, the civilized games show the Olympic image and attract worldwide attention. /kloc-in the past 0/00 years, Olympic events have continuously improved their respective competition systems and rules, and at the same time, some established civilized customs have been formed, and the etiquette for watching the games has been clearly stipulated. Watching the games in a civilized way is not only a part of the cultural etiquette of the Olympic Games, but also an important part of showing the good image of the host. 2. queue up for security check and enter the stadium on time to watch the Olympic Games. You should try to enter the stadium in advance or on time. Therefore, it is best to familiarize yourself with the traffic route to the stadium before departure and try to take fast and smooth public transportation. When you enter the venue, there will be a long or short audience waiting for security check at the entrance. You must line up in an orderly way, not in line. Please take your seats in order after admission. If the game has already started, you should take a seat nearby and look for your seat during the break. 3. Know some rules and learn to appreciate the game. Before watching the game, we should know a little about the basic rules of the game, which will help us learn to watch the doorway while watching the excitement. Watching the Olympic Games, the audience should also have a normal heart. Of course, it is worth celebrating that athletes won medals, but there is no need to drill a dead end for failure. 4. Casual clothes, neat and generous. Although there is no strict dress code for watching the Olympic Games, the audience should follow the custom of civility and courtesy. Clothing should be comfortable, casual, neat and generous, not too casual, especially in the swimming pool with high temperature. Don't be the boss. 5. Carry articles in accordance with regulations. Flammable and explosive dangerous goods are not allowed to enter the stadium. Hardware items such as lighters, wine bottles, stools, knives and canned goods such as cans are also rejected. No pets allowed. In addition, big items such as gongs and drums, whistles, horns and flagpoles are not allowed to be brought into the venue; Carry slogans, and there shall be no disguised advertisements that infringe intellectual property rights. 6. When the national flag is raised and the national anthem is played, all personnel at the scene should stand up, pay attention to the national flag, or sing the national anthem at a normal volume with music. If you are raising the national flag of another country, or the Olympic flag, or playing the national anthem or Olympic anthem of another country, you should also stand up and show your respect. 7. Enthusiasm, enthusiasm, enthusiasm for the game. In some highly competitive events, such as gymnastics, weightlifting, fencing, table tennis, tennis and so on. Athletes should keep quiet during the competition and clap their hands to show encouragement after the athletes complete their movements or die in the competition; In some track and field jumping events, the average athlete will encourage the audience to clap rhythmically and participate in the interaction before starting. 8. Respect the athletes and referees who watch the Olympic Games. They should take the initiative to cheer for both sides of the game, avoid booing, whistling, screaming in strange sounds, booing, taunting, insulting referees, athletes and coaches, throwing things at the stadium, and avoiding interfering with the normal game of visiting team players. Even if some decisions made by the referee cannot be understood and accepted, we should remain restrained and rational. 9. Swearing words should not blow your own horn in all sports competitions, including the Olympic Games. Spectators are not allowed to use foul language or use discriminatory language to insult or abuse athletes, coaches, referees and visiting fans. Racial discrimination is strictly prohibited in sports venues. 10. Keep quiet when serving and serving. Supply table tennis, badminton, tennis and other projects; Starting events such as swimming, track and field. In addition, in some whistling events, such as football and basketball, whistles similar to competition whistles are not allowed. 1 1. The indoor photography flash is turned off. In most indoor competitions, some athletes will look up at the game. Viewers can take pictures, but they are not allowed to use flash. This is strictly regulated in table tennis, badminton, tennis and other ball games, as well as gymnastics, diving, boxing, judo, wrestling, taekwondo and fencing. 12. The mobile phone of the shooting range is silent. The audience should turn off the ringtone or turn it to vibrate, especially when absolutely quiet is needed, such as shooting and tennis. 13. Patience in entering and leaving a tennis match. Spectators should not walk around at will in the game, especially in tennis. Tennis is an elegant sport with a set of strict etiquette. If you want to leave temporarily, you must wait patiently for a short rest after the third, fifth and seventh innings. 14. beach volleyball parasols put away beach volleyball and enjoy the sunshine. When watching outdoor events such as beach volleyball, the audience should prepare sun protection measures, wear sun hats and sunglasses, and bring their own drinks. This competition also includes outdoor tennis, football, rowing and kayaking. I brought an umbrella, please be sure to put it away. 15. Watch equestrian. Do not scream. Equestrian is a gentleman's sport and the only competition in which both humans and animals participate. Equestrian events, including modern pentathlon, should actively cooperate with competitors and horses in the competition, and do not throw various items into the venue to avoid hurting horses and riders. Don't take photos with flash, don't wave any flags and ornaments, don't make harsh screams at the scene, don't leave your seat or sit on the fence to watch, and don't approach or touch horses. 16. The spectators and athletes go their separate ways. There is a very clear dedicated channel for spectators to enter and leave the Olympic Games. Spectators, journalists, players and guests all have specially designated permitted routes, which allow them to pass safely and go their own ways. Spectators are not allowed to break into the restricted area without authorization because they ask for the signatures of the contestants. They are not allowed to enter the restricted area of shooting and archery competitions. They are not allowed to cross the track or touch the athletes who are competing when watching marathons, race walks and triathlons. 17. Smoking is prohibited in Olympic venues. Some venues have smoking areas, and smokers must smoke in areas where smoking is allowed. Eating is forbidden in many Olympic Games, and spectators should abide by the relevant regulations. In shooting, tennis and other games that need to be quiet, the audience should not chew noisy food. For the items brought in, clean them up when leaving the venue and take them out of the venue to keep the venue clean. 18. Orderly exit. At the end of the best game, applaud the athletes from both sides. Don't give up halfway; If you leave early, leave as soon as possible without disturbing others. When leaving, leave in the order of seats, slowly walk to the nearest exit or follow the crowd. Glad to come, peace is the best. (Olympic Festival 18) 1. Civilized watching shows the image of the Olympic Games, attracting worldwide attention.