Fourth, pay attention to the appearance of the product quality. Good PC endurance plate manufacturer can produce a variety of solid colorboard, and colorful.
?第四，注重产品的外观质量。优秀的PC耐力板厂家可以出产多种纯色板，并且色彩艳丽。
2
The onClick handler sets the current color of the board based on whether the user clicks the X or o button.
onClick处理程序根据用户点击的是X还是o按钮设置面板的当前颜色。
3
Please watch the test-object board. Can you find which number has the brightest background color?