【判断题】构成晶格的最基本单元称为晶胞。晶胞的选取是唯一的,只有这样才能正确反映晶胞所代表的晶体结构。
【单选题】Identify the sentence type of the following sentence.For Marx, work had become a passion, and he was so absorbed in it that he often forgot his meals.
A.
compound-complex sentence
【判断题】晶格中能够描述晶体结构特征的最小单元是晶胞。
【判断题】构成晶格的最基本单元称为晶胞。晶胞的选取是唯一的,只有这样才能正确反映晶胞所代表的晶体结构。
【单选题】加热炉点火前,应打开烟道挡板及通风孔,排净炉膛内( )