上运动神经元瘫特点不包括（）
A.肌张力增高
B.腱反射亢进
C.无肌萎缩
D.浅反射减弱或消失
E.失神经电位
参考答案：E
No matter ______ the CRH accident in Wenzhou, it had and will have much warning significance.
A．how the investigators said caused
B．what the investigators said caused
C．why the investigators said caused
D．the investigators said how caused
安全阀的型式分为哪几类？
