采用()可以减少振痕深度。
参考答案:高频率小振幅
______words and expressions have come into the English language from American English.[ ]
A. A large amount of
B. Masses of
C. A great deal of
D. Many a
痫病发病的主要病理因素为()
A.风
B.火
C.痰
D.瘀
E.郁