高速车螺纹时应选用()进刀法加工。
A.直进
B.斜
C.左右
参考答案:A
___ of the truth of the report, he told his colleagues about it.
A. Convinced
B. Convincing
C. To convince
D. Having convinced
胆囊疾病最常见的是()。
A.胆囊腺肌症
B.胆囊结石伴胆囊炎
C.胆囊癌
D.胆囊息肉
E.胆囊蛔虫症