对工厂同类型零件的资料进行分析比较，根据经验确定（）的方法，称为经验估算法。
A．切削用量
B．加工余量
C．工时定额
D．产量定额
参考答案：B
精癃相当于西医病为（）
A.精液囊肿
B.附睾炎
C.精囊炎
D.前列腺增生症
E.前列腺炎
The Grammar-Translation Method dominated foreign language teaching______.
A．from mid-19th century to mid-20th century
B．from 1920s to 1940s
C．from the late 18th century to early 19th century
D．from 1910s to 1930s
