What occasions are red and yellow banners suitable for?

What occasions are banners with yellow characters on a red background suitable for?

For openings, weddings, celebrations and other celebrations, use yellow characters on a red background

Other general promotional slogans, What occasions are suitable for proximity switches with white letters on venue slogans

Proximity switches are inductive and capacitive, and the sensing medium is usually metal. It can be used in industrial control, generally speaking, it is used in position signal feedback of industrial control mechanisms and actuating components, such as the origin of stepper motors, the position of cylinders, etc. What are the main common foundation reinforcement methods and are they suitable for what occasions?

According to the national standard "Technical Specifications for Construction Foundation Treatment" JGJ79-2012 (implemented on June 1, 2013),

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The main foundation treatment methods are:

1. Cushion replacement method

2. Preloading foundation

3. Compacted foundation

4. Compacted foundation

5. Composite foundation of vibrated gravel piles

6. Composite foundation of immersed sand and gravel piles< /p>

7. Cement-soil mixing pile composite foundation

8. Jet grouting pile composite foundation

9. Lime-soil compaction pile and soil compaction pile composite foundation

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10. Consolidated cement-soil pile composite foundation

11. Cement fly ash gravel pile (CFG) composite foundation

12. Column hammer punched and expanded pile composite foundation< /p>

13. Grouting to strengthen the foundation

14. What situations are special letters of credit such as micro piles, tree root piles, prefabricated piles and grouting steel pipe piles suitable for

What does the so-called special letter of credit refer to specifically? The most common one is documentary letter of credit, which can be divided into sight letter of credit and usance letter of credit according to the payment period; and sight letter of credit can be divided into sight payment letter of credit and sight negotiation letter of credit; Usance letters of credit can be further divided into: forward acceptance letters of credit and deferred payment letters of credit.

If we want to talk about a special letter of credit, there is an advance payment letter of credit (also called a red clause letter of credit) - this kind of letter of credit is used when the beneficiary requires a certain proportion of advance payment, and the application for issuance of the letter of credit The person and the issuing bank accept such a requirement, and the issuing bank allows the beneficiary to pay a portion of the price in advance under the letter of credit.

Another special kind of letter of credit is the standby letter of credit - this is a letter of credit that provides guarantee, that is, the standby letter of credit is the issuing bank providing a certain guarantee to the applicant. The applicant for the issuance of the L/C will fulfill a certain agreed obligation to the beneficiary. If the applicant for the L/C issuance fails to fulfill the agreed obligations, the issuing bank will guarantee that the amount under the standby letter of credit will be compensated to the beneficiary. When is the collection method applicable?

Entrusted collection

Entrusted collection is a settlement method in which the payee entrusts the bank to collect payment from the payer. Both organizations and individuals can collect payments in the same city or in different places. There are two ways to transfer the entrusted collection settlement money back: mail and telegram.

Collection and commitment

Collection and commitment means that the payee entrusts the bank to collect the payment from the payee in another place after delivering the goods according to the purchase and sale contract, and the payee acknowledges the payment to the bank. Settlement method. Collection and commitment must be handled by state-owned enterprises, supply and marketing cooperatives, and urban and rural collectively owned industrial enterprises with good management and review and approval by the bank where the account is opened. There are two ways to transfer back collection and commitments: mail and telegram. The starting point for each settlement amount is 10,000 yuan. The starting point for each settlement amount in the Xinhua Bookstore system is 1,000 yuan. When using the collection and commitment settlement method, the buyer and seller must sign a purchase and sale contract that complies with the Economic Contract Law, and stipulate in the contract the use of collection and commitment settlement. According to the provisions of the "Payment and Settlement Measures", payment commitments are divided into two types: payment for inspection orders and payment for goods inspection. Inspection payment means that the purchasing enterprise will confirm the payment after the collection and settlement voucher, invoice and miscellaneous charges forwarded from the bank are reviewed by the exchange according to the economic contract. Inspection payment means that the purchasing company waits until the goods arrive at the company, and then confirms the payment after inspection and that they are in full compliance with the contract. Letter of Credit Letter of Credit settlement method is a major method of international settlement.

If the letter of credit settlement method is adopted, after receiving the letter of credit, the payee unit will prepare the goods for shipment, issue relevant invoices, and send them to the bank together with the transportation documents and letter of credit, and prepare a receipt voucher based on the returned letter of credit and other relevant vouchers; payment When the unit receives the notice from the issuing bank, it prepares a payment voucher based on the relevant payment documents. What situations are capacitor filters suitable for?

Purpose: power supply filtering (removing non-DC components through capacitor charging and discharging), improving power factor (added when the inductive load is too large); Application: It is a commonly used component, and there are no special restrictions on usage

Low-frequency filter capacitors are mainly used for mains filtering or filtering after transformer rectification, and their working frequency is the same as the mains power supply of 50Hz; while high-frequency filtering capacitors are mainly used for filtering after rectification of switching power supplies, and their working frequency is several KiloHz to tens of thousands Hz. Filter capacitors play a very important role in switching power supplies. How to correctly select filter capacitors, especially the selection of output filter capacitors, is a matter of great concern to every engineering and technical personnel.

Capacitor filter is an energy storage device installed at both ends of the rectifier circuit to reduce the AC pulsation ripple coefficient and improve efficient and smooth DC output. This device is usually called a filter capacitor. Filter capacitors have polarity and are also called electrolytic capacitors. One end of the electrolytic capacitor is the positive electrode, and the other end is the negative electrode. The positive terminal is connected to the positive terminal of the rectifier output circuit, and the negative terminal is connected to the negative terminal of the circuit. In all circuits that need to convert alternating current into direct current, setting up filter capacitors will make the working performance of the electronic circuit more stable, and at the same time reduce the interference of alternating pulsation ripples on the electronic circuit. The symbol of the filter capacitor in the circuit is generally represented by "C", and the capacitance should be determined based on the load resistance and output current. When the filter capacitor reaches a certain capacity, increasing the capacitor capacity will have harmful effects on some other indicators. What situations are hollow bucket walls generally suitable for?

The hollow bucket wall is light in weight and low in cost. It can be used as a load-bearing wall for civil buildings with three floors or less. However, it should not be used in the following situations:

(1) When the soil is weak and may cause the building to sink unevenly.

(2) When the door and window opening area exceeds the wall area by more than 50%.

(3) When the building is subjected to vibration loads.

(4) Areas with earthquake intensity of 6 degrees or above. What occasions is plastic floor suitable for?

Plastic floor is suitable for home decoration, shopping malls, office decoration, education (schools, kindergartens, training institutions, early education institutions), medical care (hospitals, clinics, nursing homes, nursing homes, rehabilitation centers) ,), factories and warehouses, sports venues (gyms, indoor sports venues, gymnasiums, basketball courts, badminton courts, tennis courts, table tennis courts, volleyball courts), public places (buses, subways, train stations, airports, ships ) and other places. Compared with traditional wooden floors, plastic flooring has very high advantages in terms of color, performance, safety, environmental protection and other aspects, and ceramic tiles have been widely promoted and used in various industries. What occasions is composite lining suitable for?

Today's tunnels generally use composite lining, including initial support, waterproof layer, and secondary lining. In what situations is DCS system suitable for?

Large-scale automatic control is used in factories, petroleum, chemical industry, metallurgy, power plants, and small devices generally use PLC. For those with more than 2000 points, DCS system can be used, which is more cost-effective. , the function is also powerful.