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问题
单项选择题
混凝土浇筑好后应进行湿治养护，养护时间一般为（）天。
A、7—10
B、10—14
C、14—21
D、21—28
答案
参考答案：C
补全对话，情景问答
给下列的问句选择答语。
( ) 1. What's the weather like today?
( ) 2. What's the date?
( ) 3. What are they doing?
( ) 4. What's he doing?
( ) 5. Are they drinking water?
A. He's cooking dinner.
B. They're taking pictures.
C. Yes, they are.
D. It's September 4th.
E. It's cold and windy.
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名词解释
仲裁条款
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