vdsl2 30a

the bottom is 5 meters7. A store has a batch of shirts for sale. If each shirt makes a profit of 40 yuan, 20 shirts can be sold every day. To reduce inventory and increase profits as soon as possible, the mall decides to sell shirts at a lower price, if the price of each shirt is reduced by 1 yuan, two more shirts can be sold each day. Q: How much yuan can the price of each shirt be reduced by 1200 yuan per day on average?Solution: reduce the price of RMB a, so more 2a pieces are sold.(40-a) ×

Transferred from: http://blog.csdn.net/ricohzhanglong/article/details/4066174#commentsWhy from 20 years old to 30 years old time, can jump two level, but many people in 30 years old to 40 years old accumulate net worth, multiply number rise. Because 30 years old is very important! Li Ka-shing, Bill Gates and Yang, for example, have grabbed the turn at the age of 30. What they do is to recognize themselves, solve the present and chase the future. This seems to be a problem that people have to sol

database, and finally query the data, (31 design patterns can abstract the same database access process , the text display class in the system (TextView and the Picture display class (Pictureview inherit the component Class (Component, which displays both text and picture content, and now needs to be constructed with scroll bars, or with a black border, or a text display control and a picture display control that has both a scroll bar and a black border, but you want to add up to only three cla

reference to ' B 'COLLECT2:LD return 1This indicates that B is not defined.When you change file1.c to#include extern int A; A is a normal global variable defined in the file file2.cvoid F (){printf ("a=%d,b=%d", a,a);}Execution Result: a=20,b=30A=20,b=20 What is the difference between a static global variable and a normal global variable: the static global variable is only initialized once, preventing it from being referenced in other file units;What

current demand, one phase power supply is unable to meet the need for multiphase power supply solutions. In the entire power supply scheme, MOSFET (metaloxide semicoductor field Effect transistor, metal oxide semiconductor field effect tube. is made of metal, oxide, semiconductor three kinds of materials ——— call, the full name is really TMD long ...) The choice is more important, MOSFET is the whole power supply circuit in the biggest heating components, power supply circuit is largely subjec

The following accessories are used:Raspberry Pi 3 * *Brushless ESC 30A *Brushless Motor A2212 1400kv *7.4V Power Supply * *5V Power Supply * *Connecting Wire several The simple connection diagram is as follows: Code: Import Rpi.gpio as Gpio import time, sys #我用的第12个引脚 pin = Gpio.setmode (gpio). BOARD) Gpio.setup (PIN, Gpio. Out) #频率设置为400Hz p = gpio. PWM (PIN, max) p.start (0) #占空比从10开始, gradually added to the DC = Ten for i in range (+):