【单选题】以邻二氮菲为显色剂测定某一试剂中微量铁时参比溶液应选择( )。
【判断题】水泥胶砂强度确定,试件制作尺寸为40mm*40mm*40mm。
【简答题】The second period of Dickens's literary career is a period of _____and great ____.
【判断题】水泥胶砂强度确定,试件制作尺寸为40mm*40mm*40mm。
【单选题】The second period of Chaucer' s literary career includesmainly the three longer poems written prior to " The Canterbury Tales". Choose the one that does not belong to this period.
C.
The Legend of Good Women
D.
The Book of the Duchess
【判断题】水泥胶砂强度确定,试件制作尺寸为40*40*40mm。
【单选题】The second period of Dickens's literary career, which began from 1842, and ended in 1849, was a period of excitement and irritation. was written in this period.