【单选题】45钢制作的泵轴为得到回火索氏体应进行( )
【单选题】团内的?三会一课?指的是( )
A.
民主生活会、团员发展会、思想教育总结会和团课
【判断题】团内的“三会一课”指的是支部委员会、支部团员大会、团小组会和团课。
【单选题】In studying ,we must always ask 'whys' in order to ________.A. understand the book w
A.
25.In studying ,we must always ask 'whys' in order to ________. A. understand the book well
B.
get some questions to ask our teachers
D.
write down the questions
【简答题】为使45钢得到回火索氏体,应进行( ) (A)淬火+中温回火 (B)淬火+高温回火 (C)等温淬火
【单选题】When you visit a museum you must ask for _____ before taking photographs inside it.
【简答题】将淬火后钢件,进行高温回火的工艺方法称为( )。
【简答题】词汇考查。 1. Would you (介意) my opening the door? 2. We must be p if we ask others questions. 3. She works in a restaurant, and she is a w . 4. When this h________, I will get angry. 5. I really can't work...
【简答题】45钢为得到回火索氏体组织,应进行( ) (A)淬火+低温回火 (B)等温淬火 (C)淬火+高温回火