某四层三单元住宅主体工程规定工期为70天，施工过程可划分为砌筑砖墙、浇筑圈梁、吊装楼板。如以每一单元为一个施工段，组织固定节拍流水施工，试确定主要施工过程的流水节拍。
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She inherited a substantial____from her grandmother.
He ____for a moment before opening the door and walking into the room.
I got onto the____and drove as fast as I could.
Smaller cars have better ____and so cost less to run.
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