Look and write. (根据图片完成句子)

1. It's 10 :00.  It's time for ________.

2. It's 9 :00.  It's time to ________.  

3. It's 3 :00 p. m.  It's time for ________.

4. It's 5 :00.  It's time to ________.    

简述颚式破碎机与圆锥破碎检修后空载和负荷试车的时间要求。