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【单选题】
下面选项中哪个不是独立的基本对称素。A.
3重旋转轴
B.
4重旋转轴
C.
3重旋转反演轴
D.
4重旋转反演轴
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反馈参考答案：
举一反三
【单选题】根据《 湖南省 建筑工程 消耗量标准 》 , 关于砌墙工程量计算,说法正确的是 ( ) 。
A.
计算墙体时，不应扣除过人洞、空圈所占体积
B.
计算墙体时，应 扣除伸入墙内的梁头、板头所占体积
C.
计算墙体时，应 扣除门窗洞口、钢筋砖过梁体积
D.
计算墙体时，突出墙面的压顶线、门窗套应增加
【简答题】Ellen Parker was worried about her health. She could not walk very quickly and it was difficult for her to climb stairs（爬楼梯）. She was soon out of breath.（气喘吁吁） “I think I had better go to the doctor, ...
【简答题】阅读理解。 Ellen Parker was worried about her health. She could not walk very quickly and it was difficult for her to climb stairs. She was soon out of breath.'I suppose I had better go to the doctor.' she...
【简答题】When I woke next morning, I was dying of 36 .I seemed to have a hole instead of a 37 I dressed quickly and hurried down to the dinning-room. It was a big room with six tall windows and the ugliest wal...
【简答题】Ellen Parker was worried about her health. She could not walk very quickly and it was difficult for her to climb stairs. She was soon out of breath. “I suppose I had better go to the doctor.” she thou...
【简答题】Ellen Parker was worried about her health. She could not walk very quickly and it was difficult for her to climb stars. She was soon out of breath (气喘吁吁). “I suppose I had better go to the doctor,” sh...
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