问题
单项选择题
硬横梁支柱跨度超过()以上需采用钢柱。
A.15m
B.20m
C.25m
D.30m
答案
参考答案:C
硬横梁支柱跨度超过()以上需采用钢柱。
A.15m
B.20m
C.25m
D.30m
参考答案:C
从方框中选择恰当的句子补全对话,其中有一项多余。 A: Hi, Lin Feng! It’s a nice day, isn’t it? B: Yes, it is. 81 A: I’m going to stay with my grandparents for a month in the countryside. B: Really? 82 A: Because there is too much noise in the city. 83 What’s more, there are many green plants in the countryside. I like plants. B: I also like plants, but I like animals better. A: Why do you think so? B: 84 They are our friends. A: I think I should also make an animal friend this time. B: 85 A: Thank you.
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