【单选题】有一个未知物,测定其沸点为84.5°C,在同一条件下,测定标准试样苯的的沸点是79.5°C,苯在标准气压下的沸点是80.1°C,则该未知物地沸点校正值为( )。
【简答题】为了对电信号进行数学分析一般可以采用时域分析和______分析两种方法。
【判断题】足阳明胃经与足少阴肾经在足部相交接。( )
【单选题】Selina stopped the basketball match at eight this morning. [ ]
【单选题】下列有关墨卡托海图局部比例尺的说法中,何者准确?
【单选题】First basketball teams were formed ______.
C.
at the time when YMCA was established
D.
when Naismith came to the YMCA training school