问题
填空题
干气中C3含量超高于指标，应加强（）和（）的吸收效果。
答案
参考答案：吸收塔；再吸收塔
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干气中C3含量超高于指标，应加强（）和（）的吸收效果。
参考答案：吸收塔；再吸收塔
| 从对话后的选项中选择适当的选项补全对话。 | |
| Tony: Hi, Joy. Would you like to help to save the environment? Joy: 1_____ What can I do? Tony: Well, first, you can start by turning off the lights. Joy: Yes. That's easy. Sometimes I turn on the lights without thinking. What's next? Tony: Second, listen. 2_____ Don't take a bus or a taxi if you don't have to. Joy: That will save money, too. 3_____ Tony: 4_____ Joy: Mm, newspapers, magazines, mails … We get a lot of paper at home. Good idea. Tony: And last, take a bag when you go shopping. 5_____ Joy: OK. My parents do most of the shopping. I'll tell them. | |
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