不能
世界著名的科技史专家、英国剑桥大学的李约瑟博士考证说:“中国至少在距今3000年前,就已经使用玻璃了.”下列有关普通玻璃的说法不正确的是( ).
世界著名的科技史专家、英国剑桥大学的李约瑟博士考证说:“中国至少在距今3000年前,就已经使用玻璃了.”下列有关普通玻璃的说法不正确的是( ).
普通泡沫灭火器内的玻璃筒里盛有硫酸铝溶液,铁筒中盛有碳酸氢钠溶液,其化学反应的原理是____,不能把硫酸铝溶液盛在铁桶中的原因是____.
普通泡沫灭火器内的玻璃筒里盛有硫酸铝溶液,铁筒中盛有碳酸氢钠溶液,其化学反应的原理是\_\_\_\_,不能把硫酸铝溶液盛在铁桶中的原因是\_\_\_\_.
From the passage we learn that _____.
From the passage we learn that \_\_\_\__.
As early as the 12th century, boys in England enjoyed to play football.
As early as the 12th century, boys in England enjoyed to play football.
When a water is heated, it changes into vapor.
When a water is heated, it changes into vapor.
He has come to work for a local newspaper about ten years ago, when he graduated from Peking University.
He has come to work for a local newspaper about ten years ago, when he graduated from Peking University.
Although Jim has lived in Beijing for five years, but he doesn’t speak Chinese well.
Although Jim has lived in Beijing for five years, but he doesn’t speak Chinese well.