斜导柱与滑块都设置在定模上，为完成抽芯和脱模工作，需采用（）机构。
参考答案：定距分型拉紧
This koala bear is very lazy. He _____ during the day, but he _____ up and eats leaves at night. [ ]
A. sleeps, eat
B. sleep, eat
C. sleeps, gets
D. sleep, eats
The teacher is very angry ___________ these students.
A．with
B．at
C．of
D．in
