直流电机的型式试验项目包括：有换向极电机的无火花换向区域的测定。（）
参考答案：对
Many students ______ the English Theatre after the wonderful performance. [ ]
A. take part in
B. joined
C. joined in
D. took part in
患儿，20月。头部多汗，发稀枕秃，囟门未闭，出牙延迟，坐立行走无力，夜啼不宁，易惊多惕，甚则抽搐，纳呆食少，舌淡苔薄。宜选方：（ ）
A．四君子散
B．补肾地黄丸
C．六味地黄丸
D．人参五味子汤
E．益脾镇惊散
