- This website is based on the design principle of accessibility and uses keyboard shortcuts to strengthen the browsing convenience Layout is divided in 4 areas：
- 1. the main menu zone at the top、2. the content zone at the center、3. the menu zone on the left side、4. the related information zone at the bottom
- The following keys are set as the Access keys ( or speed keys) of this website.：
- Alt+U：Upper block, containing the links to the services of this site, search box, font size setting and versions of this site.
- Alt+C：Main content area shows the content of each page.
- Alt+Z：Bottom Link area.
- If your browser is Firefox, Press Shift + Alt + Key to jump. For example, press "Shift + Alt + C" to jump to the center of the page.
※When there's an Radio button or Checkbox, you can have the following actions：
- Radio button ： You can use ← or → to move to left or right in order to select, and the space key can also be used to select.
- Checkbox ： Use the space key to select or to cancel.