油气分离气液比调节阀主要作用是分离油路和气路，根据液压推动力工作，自动调节二次油气回收系统中的（）比例。
参考答案：油气与油品流量
根据首字母及句意完成单词。
1. We ought to be r_____ to help old people in need any time.
2. I'd like to t_____ around the world in the future.
3. Many of my classmates have poor e_____ because of too much TV and
computer work.
4. Our English teacher has a good s_____ of humour and he always makes us I
_____.
5. The Great Wall is quite f_____ in the world.
堵塞或隔离泄漏通道的密封方法，采用的是（）。
A、迷宫密封
B、螺旋密封
C、油封密封
D、抽气密封
