操作中应选用的仪器是:标定四苯硼钠液(0.02mol/L)时,精密量取本液10ml().
A.量筒
B.分析天平(感量0.1mg)
C.台秤
D.移液管
E.容量瓶
参考答案:D
That was such an____question that it made me____,not knowing how to answer.
A.embarrasing,embarrassed
B.embarrassed, embarrassed
C.embarrasing, embarrasing
D.embarrassed,embarrasing
在静稳性曲线图上,()不是静稳性力臂曲线的几何特性参数。
A.稳心半径
B.初稳性高度
C.最大稳性力臂
D.稳性范围