低温液体储罐停止充装时，关闭（）阀，之后关闭（）阀，快速打开管道接头排尽软管内（），以防止管内（）汽化增压引起压力容器。
参考答案：进液；放空；残液；残液
用所给词的适当形式填空。
1. Our headmaster invited a singer ________ (sing) for us this morning.
2. I _______ (clean) my room at 9:00 last Sunday.
3. They can do that thing by ________ (they).
4. I think _______ (predict) the future is a bit difficult.
5. The teacher told us that light ________ (travel) much faster than sound.
市政府的职权有哪些？
