問題詳情

2. Which of the following statements about the Interational System of Units (St) is (are) correct?(AB) The SI is based on seven fundamental base units.(AC) The angstrom unit

is a SI unit of length.(AD) The mole is a SI unit for the amount of a chemical substance.(AE) Not all non-SI units can be derived from the base units of SI.(BC) The SI base unit of temperature is Celsius.(BD) The SI base unit of mass is gram.

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增