皮皮学，免费搜题
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【简答题】
Family member What does he/she look like? My father My father is very tall. He has curly hair. He’s handsome. My mother My mother is not beautiful. She is short. She is only 1.5 meters tall. She has black hair. And she is fat. My sister My sister is a lovely girl. She has long curly hair. She’s of medium build. My brother My brother looks like my mother. He is short, too. He’s heavy.
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皮皮学刷刷变学霸
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【简答题】图示有缺陷的脆性材料中,应力集中最严重的是:
【单选题】成层土地基中,地表下 1m 深的范围内土层的 天然重度为 16kN/m 3 , 地表下 1 ~ 3m 土层的天然重度为 18 kN/m 3 ,则地表下 3m 处的自重应力为( )
A.
32 kPa
B.
54 kPa
C.
52 kPa
D.
48 kPa