下运动神经元瘫痪的临床特点为（）。
A.肌肉萎缩及肌肉震颤
B.腱反射减低或消失
C.弛缓性瘫痪
D.病理征阳性
E.肌张力增高
参考答案：A, B, C
45是由（ ）个十和（ ）个一组成的。
Computer（）is a complex consisting of two or more connected computing units, it is used for the purpose of data communication and resource sharing.
A.storage
B.device
C.network
D.processor
