如图所示的实验装置中,能说明发电机工作原理的是 [ ]
A.
B.
C.
D.
答案:B
用括号中所给单词的适当形式填空。
1. He was by far _____(funny) boy I'd ever seen.
2. These children seemed _____(tire).
3. No matter where she _____(go), I'll go with her.
4. She warned us that it _____(rain)in the afternoon.
5. I will be _____(thank) if you will come.
在某接头上安装螺栓后,由于通路不好采用侧面冲点的形式保险。用的标准是()
A.HB0-2-D
B.HB0-2-A
C.HB0-2-B