Ⅱ类电动工具有何明显标识？
参考答案：
Ⅱ类电动工具的明显部位标有Ⅱ类结构符号“回”。
----Why did you leave without a word of warning to John?
----But what otherwise? He never listens to me.
A．must I have done
B．should I do
C．could I have done
D．would I do
造成周围神经损伤最主要的原因有四肢 ______、______、和______等。
