圆形翻车机由旋转笼体，传动装置（）传动轮、支持轮、旋转定位器、操纵装置、挡矿板、机座、阻车器等主要部分组成。
参考答案：液压和机械
单词分类。
A. frustrating B. do more exercises C. listening to tapes D. excited
E. boring F. asking questions G. bored H. watch movies
I. frustrated J. getting an English tutor
1. The game is so _____ that I can't stand it.
2. After having a Chinese class, I felt _____.
3. I'd like to learn English by _____.
4. Do you think learning by surfing the Internet is good or bad? Why?
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小儿指纹色青者属( )
A．外感表证
B．痛证惊风
C．血络闭郁
D．脾虚疳积
E．里实热证
