The most flammable compounds incorporate carbon and hydrogen, which recombine with oxygen fairly easily to sort carbon dioxide, h2o and other gases.测试键盘是一个简单而艰苦的过程。为了对所有按键进行全面测试，需要时间和最大的谨慎。如果在测试后发现故障，则值得修理损坏的键盘或购买新的�