Which action is easy to cause back pain? Some people have an X at the last digit of their ID number, and the X is represented? Where are the sweat glands that regulate body temperature in dogs? This is the problem of the Alipay Ant Manor Small Class on July 21. Baby chicks test you, answer correctly and get 180g of chicken feed! After feeding the chicks, you can make a love donation! Let's take a look at Ant Manor's answer today.
Question 1 today: Which action is likely to cause back pain?
Answer: Long time stilted legs
Many people like to bend erlang's legs, but when they sit on their legs, they are prone to bend over and hunch over, resulting in uneven distribution of lumbar and thoracic spine pressure, which in the long run is bound to compress the spinal nerves, further cause low back pain, induce or even aggravate the original lower limb varicose veins and so on.
Question 2 today: Some people have an X on their ID number, and the X stands for?
Answer: The number 10
Great, the last digit of the ID card is the check digit, and the X is the number 10!
The last digit of the ID card is according to the first seventeen digit code, in accordance with ISO 7064:1983. The test code calculated from the MOD 11-2 check code. The check digit as the tail number is calculated by the numbering unit according to a uniform formula, and if someone's tail number is 0-9, no X will appear.
But if the tail number is 10, then it must be replaced by X, because if the tail number is used 10, then the person's ID card becomes 19 digits, and the 19-digit number violates the national standard, and China's computer application system does not recognize the 19-digit ID number. X. is the Roman numeral 10, with X instead of 10, to ensure that the citizen's ID card meets the national standards.
Source: China Xiaokang Network