问题
单项选择题
混凝土施工缝的处理包括：清理、湿润、接浆、做结合层、( )。
A．加防水剂
B．养护
C．振捣
D．搅拌
答案
参考答案：C
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混凝土施工缝的处理包括：清理、湿润、接浆、做结合层、( )。
A．加防水剂
B．养护
C．振捣
D．搅拌
参考答案：C
| 根据课文内容，完成下列任务。 | ||||||||||
| A. 完成下列表格,每空词数不限. How to ask politely
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| B. 完成下列句子,每空词数不限. 5. It is a very common and necessary activity to _____________. 6. Knowing _____________ is important. 7. We should change _____________we speak when talking with different people. 84. The expressions you use might depend on ___________ you are speaking to or __________ you know them. 9. If you stop a stranger in the street, we might first say "Excuse me. __________" or "I'm sorry to trouble you but," before asking them for help. |