问题
单项选择题
切削时控制切屑流出方向的主要刀具角度是()。
A.前角
B.后角
C.刃倾角
D.主偏角
答案
参考答案:C
切削时控制切屑流出方向的主要刀具角度是()。
A.前角
B.后角
C.刃倾角
D.主偏角
参考答案:C
根据句意选择单词,并用适当形式填空。(共10小题,每小题1分,满分10分).
小题2: He ______ to his classmates and joined them in the heated discussion. 小题3: He has a good ________ of German. 小题4: He speaks English as as a native English speaker. 小题5: Mr.Wang, are you free _______? I’ve got some questions for you. 小题6:The girl finally ________ her shyness and stood up, answering the question. 小题7: The dark, rainy evening, the wind, the thundering clouds held me entirely in their_______. 小题8:Jane and Mary are good friends; the former is a teacher, and _______ is a nurse. 小题9:The wind is in the _______ direction. 小题10:Tom ____________ the doctor’s advice and goes on smoking. |