The examination was coming, but she couldn't go to sleep easily. Thoughts ________ in and images

flashed into her mind.  [ ]

A. crowded      

B. broke

C. fitted          

D. settled

主要泵房至少有2个出口，一个出口用斜巷通到井筒，并应高出泵房底板（）以上；另一个出口通到井底车场，在此出口通路内，应设置易于关闭的（）的密闭门。