三相异步电机当转子不动时，转子绕组电流的频率与定子电流的频率相同.
参考答案：对
根据句意和首字母提示补全单词。
l. In 1938, Bethune went to n_____ China, as he knew many people were dying in the war.
2. His grandfather died in the Anti-Japanese W_____.
3. The doctors and the nurses should learn how to give first a_____
4. He once o_____ for sixty-nine hours without stopping.
5. Norman Bethune is b_____ in Tang County, Hebei Province.
自动按频率减负荷装置动作跳开某线路开关后，其自动重合闸是否会动作？为什么？
