2024-12

1. What is the Conference table

The Conference table, as the name suggests, refers to the tables specially equipped in order to hold a meeting, are one of the most common modern office supplies.Under normal circumstances, the Conference table is processed by environmental protection substrates, PU high -end polyester paint, high -quality hardware and other materials, and most of the conference tables are mainly solid wood spray paint or cherry wood leather.

2. What types of conference tables

1. Classified according to specifications

The Conference table can be divided into small conference tables, medium -sized conference tables, and large conference Desks. First of all, the size of the conference room is set according to the number of participants.Common conference tables, 10 conference tables, 20 conference tables, 30 -member meeting tables, etc.

2. Classification according to materials

The Conference table is usually made of wood, metal, glass, stone and other materials.The wooden Conference table is usually more suitable for traditional business and academic environment, and metal and glass conference tables are more suitable for modern business and scientific and technological environments.The stone Conference table is usually heavier, and is used for important political and business occasions to reflect stability and majesty.

3. Classification according to shape

The Conference table can be divided into a circular Conference table, a rectangular Conference table, a Square Conference table, an oval Conference table,Square Conference table,Return Conference table, U -shaped Conference table, T -shaped Conference table, and polygon Conference table.It is usually determined according to the occasions and number of people.The rectangular and oval conference tables are usually used for business and political conferences, and round and Square conference tables are usually used for small group meetings and academic seminars.

4. Classification according to style

The Conference table can be divided into traditional conference tables and fashion conference tables.The traditional Conference table is a solid wood Conference table, which is not easy to move.This Conference table is more formal, solemn and serious.The fashion Conference table is caused by diversification of people's office.Employees need to use conference tables for learning, training, business negotiations, business activities, etc.In order to make the meeting look less boring, they will pursue a sense of fashion more, and determine the Conference table according to the theme of the meeting.

[Features of football shoes] What are the design characteristics of football shoes?

The love of football shoes is still due to the high -tech content of football shoes. The technological content of a pair of top football shoes is far exceeding a pair of top basketball shoes, running shoes, kangaroo Skin, irregular shoe nails, hidden shoelace design and asymmetric shoe bodyThey only appear on football shoes, and because of these obsessions of football enthusiasts, these are also not available in other shoes.But no matter how perfect football shoes will become street shoes, this is mainly because of the characteristics of football shoes. football shoes focus on the touch of the ball and the weight of the shoes, so the shoes will be relatively small, and the football shoes of general professional players are full of football shoes.It is not easy to match the clothes with your feet; and most of the football shoes also have shoe nails, which is not conducive to usual wear.

What are the characteristics of football shoes? Not only is football shoes small, but also light, the shoe's so had a thicker and thickest Skin, which can effectively prevent impact.football shoe nails are conducive to changing directions at any time and Running.football shoes have special designs on the back and shoelaces of the shoes to meet different needs of various positions on the court. For example, T90 and Falcon pay attention to shooting, Adi's F series and Nike assassins pay attention to speed.And Nike's legend, CTR360.These football shoes are designed according to different locations, so they have advantages in one aspect.

Acute waist sprain, commonly known as flashing waist, is the acute tear laceration caused by the sudden pull of the waist muscles, fascia, ligaments, and other soft tissues such as external force, which often occurs when the heavy objects and waist muscles are contracted.Acute lumbar sprains can tear the adhesion points, osomas, fascia, and ligament of lumbosacral muscles.

The cause of acute lumbar sprain

There are two main reasons that cause damage to the waist soft tissue:

1. Limb sprain

Most of them are caused by walking, jumping, flashing body, and Running. Most of them are caused by muscle and ligaments, so the damage is lighter.

2. Bulberry and wounds

It is more serious damage, such as high force in the process of high climbing, tilted, and carrying heavy objects.Essence

Symptoms of acute lumbar sprain

After the patient was injured, the waist pain occurred, and there was a continuous drama. The next day, it was more serious due to local bleeding, swelling, and low back pain. Some of them only twisted the waist slightly.Essence

Limited waist activity is limited, you must not be straight, and it is difficult to prone, leaning, and twisting. Cough, sneezing, and urination can exacerbate the pain.

When standing, I often support the waist with my hands, and hold my hands in the chair with both hands when sitting to reduce the pain.

Pain occurs on one or sides of the lumbar muscles after sprains; sometimes it can be painful and overnight after being injured or overnight, and the waist activity is blocked. The pain is slightly lighter during static, and the pain is more painful when the activity or cough.During the examination, local muscles were tight, tender, and traction pain, but there was no congestion.

How to deal with waist sprain

1. Lie down as soon as possible

Lie down as soon as possible after the waist sprain to reduce the pressure of the muscle fascia tissue or the pressure of the lumbar spine, and relieve pain.For more severe sprains, we should rest in bed for at least 5-7 days.

2. Cold compress

Wrap the ice cubes with a plastic bag, wrap a thin layer of thin towels, or directly immerse cold water with a towel, and apply it to the pain site to directly reduce the pain. More importantly, cold compresses can shrink the capillaries and reduce the muscle fascia tissue bleeding.Change the towels every 1-3 minutes, 5-10 times in a row.The time to apply should not be too long, otherwise it will affect the normal circulation of the blood, which is counterproductive.

3. Do not press

Do not blindly press the acute stage, otherwise it will increase the bleeding of the muscle fascia tissue or cause disconses of intervertebral disc.

4, hot compress

After 48 hours, the damaged capillaries have stopped bleeding, and it can be changed to hot compresses at this time.Hot compresses can promote the absorption of congestion and blood circulation, so that the soft tissue is repaired as soon as possible.

5. Physical therapy

After the improvement of pain and spasm, some physical therapy can be done appropriately to accelerate the recovery of injury.There are many ways to physically therapy, with technical reset, infrared rays, local massage, acupuncture, and external application of Chinese medicine. You should depend on personal circumstances.

6. Use medicine

During bed rest, you can use analgesic relieving spasm, hemostasis and swelling ointment (such as Fusalin milk cream, Yunnan white medicine spray, etc.), but pay attention to the Skin cannot be used when the Skin is damaged.If necessary, you can take anti -inflammatory analgesic and neurotic nutritional drugs.

TIPS: If there is only waist pain, there is no symptoms of compressive nerves such as leg pain, numbness, weakness, and dysfunction of the legs. At this time, it is recommended that you do not have to rush to the Hospital for examination.If the symptoms of compression nerve occur, the lumbar disc herniation is likely to occur. It is recommended to go to the Hospital for examination.If there is only waist pain and the bed rest has not improved after 3-5 days, it is recommended to go to the Hospital for treatment to avoid developing chronic low back pain.

The treatment of acute lumbar sprain

The acute period should be restrained.Those with obvious tenderness points can be closed with 1%Protaine (or 1 ml of hydrogenate hydrogenate hydrogenate) for pain points and supplemented by physical therapy.You can also apply blood circulation, stasis, and analgesic plaster locally.After the symptoms are reduced, the back muscles are gradually started.

Prevention of acute waist sprain

1. Education employees should be publicized, strictly abide by operating procedures, familiarize themselves with production technology, prevent rough dryness, and eliminate the incidence of work injury.

2. Improve the labor conditions as much as possible, and replace the heavy physical labor with mechanical operations.Attention should be concentrated during labor, especially when collectively carried heavy objects, we should work together under unified command and consistent pace.

3. Master the correct labor posture. For example, when carrying and lifting heavy objects, try to make your chest and waist straight up, flex your hips and knees, and get up with your lower limbs.Take a half squat to make the object as close to the body as much as possible.

4. Strengthen labor protection. When doing heavy physical labor such as carrying, lifting, moving, and lifting, we should use the Belt to help stabilize the waist spine, enhance abdominal pressure, and enhance muscle work efficiency.If you work in a cold and humid environment, take a hot bath to remove cold and dampness and eliminate fatigue.Try to avoid working for too long for the forced posture of bending.

1. What are the differences between night vision glasses and Polarized glasses

1. Different principles

The polarizing mirror is made according to the polarization principle of the light, and the unnecessary light is scattered, such as strong sunlight.

Night vision mirrors are based on the auxiliary observation tools made by the night vision technology at the same time. The night vision technology includes two aspects: micro -light night vision and infrared night vision.

2. Different effects

The special effect of polarizing mirror is to effectively exclude and filter the scattered light in the beam, so that the light can put the eye visual image into the eye transmittance shaft, making the field of view clear and natural.

Micro -light night vision mirrors make the weak light large, so that it shows a clear picture in the sight, so when there is no light at all, the microcomioxid night vision mirror cannot be seen; the active infrared night vision mirror is inIn any case, you can see things. If there is no infrared source, passive infrared night vision mirrors cannot see things.

3. Different use of usage

Polaries can be used when driving, fishing, skiing, rain, etc. are used in strong reflection or strong light.

Night vision mirrors are usually used at night, and they are widely used in the fields of transportation, military and other fields.

2. How to choose night vision glasses

1. Material of the lens

The material of the lens affects the effect of protecting the eyes. You should choose the driving mirror made of polarized lenses. This can effectively reduce the dazzling Lights and the light of the Lights.The strong light becomes soft, and the vision is clearer, which also guarantees the safety of the driver's friends and relieves the fatigue of the eyes.If possible, let the salesperson darkens the light when buying, and feel the softness and clarity of the Lights after wearing the product.

2. The radian of glasses

The comfort of polarizing driver mirrors depends on the arc of glasses.Westerners' nose bridges are generally tall, and the contours of the bridge of our Orientals are round. Therefore, when choosing, you can try it. After wearing it, you can feel that it is easy to drop and hold the nose. It is most important to choose the glasses suitable for us.

3. The nose of glasses

When the driver friends buy the night vision mirror, they should choose the kind of soft and elastic nose. In this way, it will not make the nose of our major drivers feel uncomfortable.

4. Observe the mirror leg

The flexibility of the driver's mirror legs is also very important. Check out whether the mirror legs are flexible and whether the size can be adjusted to meet the needs of different drivers and friends. Flexible mirror legs will be easier to adjust and make drivers feel more comfortable.

5. Framework material

You should choose a driving mirror of the alloy material. The glasses made of this material are very light, the weight is not heavy, and it is strong. The ears will not be uncomfortable because of wearing glasses for a long time.

6. The thickness of the lens

The thickness of the driver's lens lens affects the use of glasses to a certain extent. Choosing glasses with thicker lenses can be more durable to prevent the glasses from being stimulated and unexpectedly crushed, effectively protecting the eyes of drivers and friends.

1. Do you need to verify the gliding umbrella?

The gliding umbrella is a high -altitude movement with a certain danger. It is currently under the management of the China Aviation sports Association. There is a complete set of examination training specifications. There are specialized glide umbrella pilots certificates. So do you need to verify the glide umbrella?

Generally speaking, gliding umbrella flights are divided into two modes, one is the experience mode of professional coaches flying. This does not require my own research. The glide umbrella coach must have a relevant certificate; the other is a single flight mode.It is necessary to verify that after the special technical training is required, the certificate can be obtained after assessment.

Some friends do not intend to be a special coach to fly, but they just fly casually by themselves. They may think that it is not a big deal to take the test. However, it is generally recommended to take a certificate. OtherwiseNo relevant insurance.

2. How many Levels of gliding umbrella certificates are divided into Levels

Global umbrella Certificate, the full name is the gliding umbrella pilot level certificate, a total of five Levels:

1. Class A: Flying on the ground, the gliding umbrella flying on a hillside of not more than 100 meters. Students who complete the primary training course can get the "Grade A Certificate of Global umbrella Movement" issued by the Chinese Aviation sports Association.

2. Grade B: High glide, gliding umbrella at a sufficient height (more than 300 meters) and flying above a certain area, complete intermediate training courses and pass subject assessment, under the condition that the flight time and flight times can beApply for upgrade.

3. Class C: Dynamic gas currents soar, gliding umbrellas use the power of the hillside to rise to the air flow to make a short time flying.

4. Grade D: Hot air currents soaring, gliding umbrellas use the heat to rise to the air flow for air, which belongs to the medium and senior flight grade certificate.

5. E -Class: Long -distance flight, gliding umbrella using the upside off -road flight from the take -off point, requires the pilots to accumulate considerable flight experience and flight hours.flight.

3. What are the conditions for gliding umbrella test?

Global umbrella Pilot Certificate is divided into five Levels of ABCDE. The conditions for certificates of different Levels are also different:

1. Class A

(1) Over 16 years old, with culture above junior high school.

(2) Qualification certificate of the medical examination at the county level.

(3) Complete the theoretical teaching parts stipulated in the training outline.

(4) The flight time is not less than 5 flight days, and the number of flights is not less than 20 times.

2. Class B

(1) Have a Class A certificate.

(2) The flight time is not less than 20 flight days, and at least 40 flights.

3. C level

(1) Have a B -level certificate.

(2) The total number of flights is not less than 100 times, and the total time is not less than 20 hours.1 hour.

4. D level

(1) Have C -Class Certificate.

(2) The total flight time is more than 50 hours, and there are 3 times not less than 2 hours (there are record certificates in the official competition).

5. E -level

(1) Have a D -level certificate.

(2) There are at least 3 flights of more than 50 kilometers in different rising airflows (in the formal competition).

Global umbrella tests need to be taken in order, and at least half a year is needed for each level.