【判断题】标准作业三要素包括节拍时间、标准作业顺序和标准在制品。()
【简答题】我同科学家首先证实缺 是发生克山病及大骨节病的重要原因。
【单选题】下列哪种微量元素缺乏已被证实是发生克山病的重要原因
【简答题】optician ( one who makes and fits corrective lenses for the eyes; root: opt/o)
【判断题】我国科学家首先证实缺硒是发生克山病的重要原因
【简答题】我国科学家首先证实缺 是发生克山病及大骨节病的重要原因。
【单选题】I'm one of. the students ______never later for school.
【单选题】The defense lawyer was questioning the old man who was one of the ________ of the murder committed last month.