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【多选题】
对墙体材料的绝热性能的影响因素,描述正确的是( )。
A.
材料的孔隙越粗大，不仅可以降低建筑物自重，还可以提高绝热性能
B.
材料越密实，越能有效阻止热对流，有利于提高绝热性能
C.
材料受潮，导热系数增大，绝热性能降低
D.
材料受冻后，导热系数大大增加，绝热性能严重降低
E.
同类墙体材料，密度越大，其绝热性能越好
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相关题目：
【单选题】Why didn't the woman go swimming?
A.
She didn't have enough time.
B.
The water was too cold.
C.
The water was too deep.
D.
She was unable to swim.
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【简答题】Why didn't the Japanese woman look at the man in the meeting? [A] Because she disliked the man. [B] Because they were competitors. [C] Because she was a shy woman. [D] Because she was polite to the ma...
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【单选题】Why didn't the elder woman allow Jane in?
A.
Because she thought Jane was a beggar or thief.
B.
Because she thought Jane was too thirty.
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【单选题】Why didn't the woman go to dinner?
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Because she couldn't find the restaurant.
B.
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【单选题】肝的位置描述哪项错误
A.
肝上界与膈穹隆一致
B.
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【单选题】Why didn't the woman buy the saucepans earlier?
A.
Because she didn't have money with her.
B.
Because her neighbor wanted to have them.
C.
Because she hadn't decided to buy then.
D.
Because the shop already closed up.
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【简答题】下列关于成人肝的位置描述,哪项是错误的A. 大部分位于右季肋区和腹上区 B. 上界的最高点在左侧相当于左锁骨中线与第5肋间隙的交点 C. 下界可达右肋弓下方2cmD.下界在剑突下5cm以内
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【单选题】下列关于成人肝的位置描述,哪项是错误的 :
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大部分位于右季肋区和腹上区
B.
上界的最高点在左侧相当于左锁骨中线与第5肋间隙的交点
C.
下界可达右肋弓下方2cm
D.
下界在剑突下5cm以内
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平静呼吸时可上、下移动2~3cm
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