运动神经元病是一组病因为未明的选择性侵犯
A．锥体束
B．脊髓侧角细胞
C．脊髓前角细胞
D．皮质锥体细胞
E．脑干后组运动神经元
参考答案：A,C,D,E
风邪致病，可出现
A．咳嗽咽痒
B．头痛汗出
C．肢体麻木
D．四肢抽搐
The self-contained breathing device should not be used in which situation?（）
A.Oxygen deficient spaces
B.Compartments containing poisonous vapors
C.Fighting fires that produce heavy smoke
D.Underwater search
