烟片复烤干燥段的主要技术条件包括（）
A.热风温度
B.热风相对湿度
C.网面风速
D.网带速度
参考答案：A, B, C, D
As a young man, Zhou Enlai ____ the students movements and later ____ the Communist Party of China.
A．joined; took part in
B．took part in; joined
C．joined in; took part in
D．took part in; joined in
600V以上的交流电压，一般不直接接入电压表。工厂中变压系统的电压，均要通过电压互感器，将二次侧的电压变换到（）在进行测量。
A、380V
B、220V
C、110V
D、100V
