practical common lisp

IMAX (full negative load) required in the entire system should be calculated first, and after determination, the rated current of the fuse is selected for imax/75% use.2) DC resistance P = I2 R, if the power dissipation is too large, consider the thermal problem.3) The rated voltage refers to the maximum voltage that can be sustained when the fuse is blown, and should generally be larger than the entire system input voltage. According to the UL standard, when choosing the rated voltage of the f

The following are the most common and practical CSS skills. 1. Reset the font size of the browserReset the default value of the browser, and then reset the font size of the browser. You can use the CSS solution reset on the Yahoo user interface. If you do not want to download a 9 MB file,CodeAs follows: Body, Div, DL, DT, DD, UL, ol, Li, H1, H2, H3, H4, H5, H6, pre, form, fieldset, input, textarea, P,BLO

Share common iOS development (third-party class libraries, tools, high-imitation apps, and practical websites) and iosapp I. JSONModel (the third-party class library will be updated. We suggest you download it online) Http://pan.baidu.com/s/1i5ybP1z Ii. AFNetworkiong Http://pan.baidu.com/s/1eSi8U0U Iii. MJRefresh Http://pan.baidu.com/s/1pKLVUv5 Iv. GData Http://pan.baidu.com/s/1bIYCPo 5. MBProgreHUD + MJ Ht

1. Modify directory permissions[[Email protected] ~] # Chmod 777/home/user Note: only set the permission of the/home/user directory to rwxrwxrwx.[[Email protected] ~] # Chmod-R 777/home/user note: Set the permissions of the entire/home/user directory and its files and subdirectories to rwxrwxrwx.2. Delete a fileDelete a folder instance:Rm-rf/var/log/httpd/accessThe/var/log/httpd/access directory and all files and folders under it will be deleted.Delete a file instance:Rm-f/var/log/httpd/access.

　　　　　　　　　　　　　　　　　　　　　Common practical events for jqueryNote: Because more jquery fragments are not inserted with insert code text, please forgive me!JQuery Event HandlingReady (FN)Code:$ (document). Ready (function () {});Role: It can greatly improve the responsiveness of Web applications. By using this method, the DOM loading is ready to be read and manipulated.Immediately call the function you are bound t

classic algorithms used in several open source projects. Http://t.cn/8kAP4yG Author lists code from the most basic hash table to string matching and encryption algorithms in the chromium and Linux kernels. Viewing open source code is a good way to learn the algorithm.We have also published their own views:@GeniusVczh:The so-called algorithm implementation is the same as the endorsement, so if not to learn grammar, do not look at those with code programming books, or the code inside the programm

: Suspend or restart the system, these three Linux command line keys under Linux can be easily modified to shutdown operation, which is very convenient for single-user friends# Ctrl + L-Clear screen# Ctrl + A-cursor moves to the beginning of the line# Ctrl + E-the cursor moves to the end of the line# Ctrl + W-clear the cursor before a word# Ctrl + K-Clears the character of the cursor to the end of the line# Ctrl + T-swap the first two characters of the cursor# CTRL + V-input control word such as