毛细管黏度计的主要结构（）
A.毛细管
B.储液池
C.控温装置
D.样本传感器
E.计时装置
参考答案：A, B, C, E
用括号内所给形容词的适当形式填空。
1. Mr Read is very ______ (short).
2. She is ______ (old) of us all.
3. I think diving is ______ (difficult) activity of all.
4. English is ______ (important) than math.
5. Kitty has ______ (little) milk of the three.
电能量计量系统的数据周期为（）。
A.5min
B.15min
C.30min
D.60min
