1, 75:18=1/24 38:225 =38/225 15:10 =25 A salt water with a ratio of salt to water of 2:15. There are 340 kilograms of this water, of which how many kilograms are salt and water? Solution: Salt: 340×2/17=40 (kg) Water: 340-40=300 (kg) so there are 40 kg of salt and 300 kg of water.
2, Problem description: A classmate found in A and B two supermarkets that the price of his walkman is the same, and the price of the schoolbag is the same. The sum of the price of the walkman and schoolbag is 452 yuan, and the price of the Walkman is higher than that of the schoolbagEight yuan less than four times the price of the schoolbag.
3, Answer: a series of lights with simple decimal points, 7 numbers of 7, and finally more than 1; The number of nine 9s, the last more than three; Five of the five numbers, just count them out.
4, [Answer] Set a barrel x yuan, B barrel y yuan 10x 6y=51 12y-8x=18 solution x=4 y=5 So in B cheap a school organized students to go to the nature reserve camping, now at the speed of 60 kilometers per hour to walk the road, and then at the speed of 30 kilometers per hour climbing.
5, solution: Set the distance between Little fat home and school as S meter: Little fat usually to school time: S/80 Little fat today to school time: S/100 According to the question there is an equation S/80= (S/100) 2 Solution to this equation: S=800 (m), so: Little fat today to go to school with time: 800/100=8 (minutes) It took little Fat 8 minutes to walk to school today. Solution: Let the little sub travel u kilometers per hour.
6, a class of 45 people participated in a math contest, the result of 35 people got the first question correct, 27 people got the second question correctAffordability, access to high-speed data transmission capability (480Mb/s), and can achieve convenient out-of-box plug and play features for easy use by end users. Wireless data transmission receiving equipment is an important part of a shooting range measurement system. 2, the theoretical transmission speed is 480 Mbps, that is, 60 MB/s, but the actual transmission speed is generally not more than 30 MB/s. USB interface has the characteristics of faster transfer speed, support for hot swap and connect multiple devices. It has been widely used in various external devices. There are four USB portsFive: USB1, USB0, USB0 and USB1 (1Gen 1 and 1Gen 2).
3, the actual transmission rate of USB0 is about 2Gbps (that is, 320MB/S), and the theoretical maximum rate is 0Gbps (that is, 500MB/S). Note that the bandwidth of 5Gb/s is not 5Gb/s divided by 8 to get 640MB/s, but uses the same 10-bit transmission mode as SATA (with a new pair of error correction codes on top of USB0), so its full speed is only 500MB/s.
4The theoretical fastest transmission rate of the USB 0 interface is 5 Gbps, that is, 648 Mbps. This rate is the theoretical value in the ideal environment, the actual use may be affected by equipment performance, interface quality, cable length, load and other factors, may be lower than this theoretical value.
5, the nominal transmission rate of USB 0 interface is 5 Gbps (5 Gbps ÷ 10 = 500 M/s). However, the actual transmission speed is limited by the speed of the master chip of the connected device and the reserved bandwidth of the system. For example, SATA 0 interface solid state hardDisk (SSD) maximum speed is about 550 M/s, but when connected via USB 0 interface, the actual transfer speed is usually around 450 M/s.
6, USB0 transfer rate is about 320MB/S, the theoretical upper limit is 640MB/S. USB0 has a transfer rate of 30MB/S, with a theoretical upper limit of 60MB/S. How USB works: USB is an external bus standard that regulates the connection and communication between computers and external devices. The USB port provides hot swap function. USB interface can connect a variety of peripherals, such as mouse and keyboard.
Radiator Kyushu Fengshen Ice Blade player version ￥170 or Tt Phoenix S400 (the latter is my 2500k radiator, personally feel stronger than the side blow) quad-core configuration heat dissipation to solve well, 100 yuan heat dissipation is definitely not. Motherboard Gigabyte GA-B75-D3V (rev.1) 699All-solid large board, easy to install hardware, good heat dissipation, enough power supply.
Outline of the Basic concepts of junior high school physics Measurement Length L: Main unit: m; Measuring tools: scale; The measurement should be read to the next digit of the smallest scale; Light years are units of length. ⒉ Time t: Main unit: second; Measuring tool: clock; The stopwatch is used in the laboratory. 1 hour = 3600 seconds, 1 second = 1000 milliseconds. Mass m: The amount of material contained in the object is called mass.
People teachOverview of the final physics review outline in the second volume of eighth grade: Junior high school physics review content involves acoustics, heat, optics, force and motion, molecular kinetic theory and internal energy and other modules. First, the acoustics section introduces the production and propagation of sound, including medium action, speed, and vacuum cannot transmit sound. Thermology explains the definition of temperature, the measuring tool (thermometer) and its working principle, as well as the conversion of different temperature units.
To understand the basic physical laws: first, to understand the following problems: (1) how the law is established; (2) the conditions and conclusions of the law; (3) the form and meaning of text expression;(4) the formula expression form and the physical meaning of each symbol and the units of each quantity; (5) the scope of application of the law; (6) How to apply rules to solve simple problems.
Law of transformation and conservation of energy: energy is neither produced nor lost, it can only be changed from one form to another, or from one body to another, while the total amount of energy remains constant. The circuit consists of a power supply, key, electrical appliance, wire and other components. In order to have a continuous current in the circuit, there must be a power supply in the circuitAnd the circuit should be closed.
As for love, I think it is still put on for a while, usually pay more attention to study, but it can not be too stressful. Dress up, as usual, but this is the surface work, the heart also responsible for themselves, concentrate on learning. Don't think too much, this time the surface and the heart must not be the same.Linlin lin 8 Muji rui rui 14 Jinji Tiange -16 (Earth) personality-23 (fire) Digge -22 (wood) Foreign lattice -15 (Earth) Total lattice -37 (Gold) Description: The strokes of the word to "KangxiAccording to the Dictionary, the calculation method of Kangxi stroke is different from that of simplified stroke, and it cannot be calculated by the current method of stroke calculation.
1, Huawei P40 mobile phone is very good, parameters are as follows: Screen: screen size 1 inch, screen color 16.7 million colors, resolution FHD 2340 × 1080 pixels, watching movies more comfortable.
2, Huawei P40 good, the phone parameters are as follows: Screen: Screen size 1 inch,Screen color is 16.7 million colors, DCI-P3 wide color gamut, resolution: FHD 2340 × 1080 pixels, large screen but the body is more compact, one-hand operation feel more comfortable.
3, Huawei P40 is very good, the phone parameters are as follows: Appearance: body size: 149mm (length) x 706mm (width) x 50mm (thickness); It has the most popular pantone color this year, which is different from other mobile phones on the market, and it can be seen at a glance in the hand, which is definitely recognizable.
4, both series are worth buying, if you want to divide a highThe Samsung S20 series performs better overall. Both Huawei and Samsung launched their flagship phone lines this year. Huawei's P40 series includes the P40 and P40 Pro; Samsung's Galaxy S20 series includes the Galaxy S20, Galaxy S20, and Galaxy S20 Ultra. We compare test results in the lab to see which one is better.
5, Hello, little cute ~ Let me help you to answer a signal about Huawei and Samsung in the end which is better? My suggestion is: such asIf you are often in remote areas or have high requirements for 5G speed, then Huawei may be more suitable for you; If you live in a city or have high requirements for network optimization, then Samsung may be better able to meet your needs.