问题
填空题
常用的阀门有截止阀、闸阀、蝶阀、止回阀、手动调节阀、（）。
答案
参考答案：电磁阀
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常用的阀门有截止阀、闸阀、蝶阀、止回阀、手动调节阀、（）。
参考答案：电磁阀
| 用所给系动词、助动词或情态动词填空。 | |
2. What ___________ your job? 3. ___________ they come from Shanghai? 4. What ___________ I do for you? 5. Bill is ill. So he ___________ stay in bed. 6. He ___________ at home last night. 7. Where ___________ you yesterday? 8. She often ___________ her homework in the evening. 9. ___________ I open the door? 10. She ___________ be ten next month. 11. ___________ you enjoy your holiday? |