FDGJ电路中的条件电源KZ-GDJ在轨道停电又恢复供电时起防止进路（）的作用。
参考答案：错误解锁
词汇。根据句意及所给首字母完成下列句子。
1. You room is so dirty. Please c______it now.
2. Could you take a picture for us? Here is the c______.
3. There is a supermarket near my home. Let's go s______.
4. The family live in an a______on Renmin Road.
5. He often goes to the l______to borrow( 借) some books.
20世纪30年代的美国反映的是理财规划的（）阶段。
A.种子期
B.初创期
C.扩张期
D.成熟稳定期
