电能表的基本误差主要由传动部分的（）以及电流元件的电流与磁通之间存的非线性关系所引起。
参考答案：摩擦
温抗体（）
A.IgG抗体
B.IgM抗体
C.两者均可
D.两者均否
The rainy season is coming and let’s make full use of the ________ days to dry whatever is needed to dry before the next dry season.
A．few last sunny
B．last few sunny
C．last sunny few
D．sunny last few
