在帝国的旗帜下，我们团结一心。过氧碳酸钠对人有害吗

　　In the early days of the 20th century, the German Kaiser challenged the naval power of the British with a new and mighty battle fleet. Who would rule the world's seas? It was a question that would be decided in the First World War. After the shock defeat of the British at Coronel, a battle which cost 1,700 seamen their lives, Winston Churchill demanded a merciless revenge. Off ... (展开全部)