根据第一段倒数第二句once the technology catches up with the area of the discovery, it shows exactly how valid the theory is.可知,是技术的限制阻碍了理论的发现进程,故选C。细节理解题。根据第三段.a doctor proposed that cancer was caused by the inhalation(吸入of pollutants, in the form of ...
Write the chemical equations showing the reactions that take place when: (a) H^+ ions are added to the buffer solution. (b) OH^- ions are added to the buffer s Give chemical equations that show how an H3PO4/NaH2PO4 buffer will react to the addition of a...
Chemical links between sulphate and nitrate species resulted in some ammonia becoming available for forming ammonium nitrate, partly offsetting the sulphate aerosol reductions. However, this effect is small and the offset only exceeds 1% around the east coast of China, with a maximum of 15% over t...
Chemical links between sulphate and nitrate species resulted in some ammonia becoming available for forming ammonium nitrate, partly offsetting the sulphate aerosol reductions. However, this effect is small and the offset only exceeds 1% around the east coast of China, with a maximum of 15% over t...