浇口套的定位环松脱，可用什么方法修理（）。
A、电焊
B、钻孔加销
C、挤捻法
参考答案：C
Choose the right answer to fill in the blanks. (看图完成句子)
A. Thank you.
B. Good morning.
C. Nice to meet you, too.
D. Where are you from?
A: Good morning!
B: 1______________
A: This is my friend, Nancy
B: Nice to meet you.
C: 2______________
B: 3______________?
C: I am from the USA.
B: Welcome to our school!
C: 4______________
意识清楚，兴趣减退，思维迟缓，言语动作减少
A．情感淡漠B．抑郁状态C．痴呆状态D．脑衰弱综合征E．缄默状态
