为区分起见,两相邻零件的剖面线应方向________,而同一零件在各剖视图中,其剖面线的方向应________,间隔应________。
A. 相反/相反/相同
B. 相反/相同/相同
C. 相同/相反/相同
D. 相同/相反/相反
销多用于被连接件间的________,有时也用来传递________的动力。
A. 定位/较大
B. 定位/较小
C. 锁紧/较大
D. 防松/较小
---Excuse me, what’s the time now?---_____
A. It’s Friday.
B. It’s sunny.
C. It’s October 4
D. It’s half past ten.
---Shall we go to the amusement park right away or next weekend?---_____ .Any time will do.
A. Excuse me.
B. Have a good time.
C. I’m afraid I can’t.
D. It’s up to you.