选用的漏电保护器的额定电流不动作电流值，应不小于电气线路和设备的正常泄漏电流的最大值的( )。
A．1倍B．2倍C．3倍D．4倍
参考答案：B
下图中的诗歌创作的背景是
A．五四运动爆发
B．马克思主义在中国传播
C．中 * * 党的成立
D．苏联建成社会主义
根据句意填写单词使句子完整。
1. In Canada you should _____ hands when you meet someone for the first time.
2. He wanted to the girl on the check, but she refused him.
3. Switzerland is the ________of watches.
4. The teacher has a strict attitude her work.
5. Western people cat food with a and .
