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【单选题】
穿过两层的稳态热传导过程，已知各层温差为△t1=40℃，△t2=15℃，则第一、二层的热阻R1、R2的关系为_______。A.
无法确定
B.
R1 < R2
C.
R1 = R2
D.
R1 > R2
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皮皮学刷刷变学霸
举一反三
【单选题】羊水栓塞的主要病理诊断依据是
A.
肺小血管和毛细血管内有羊水成分
B.
微循环内透明血栓
C.
肺广泛出血
D.
肺泡腔内有角化上皮、胎脂、胎粪等羊水成分
E.
肺内透明膜形成
【简答题】When and why did all the employees receive a watch from the company?
【简答题】Answer these questions: 1 )When and where was the first Volvo manufactured? 2 )What kind of vehicles does Volvo manufacture? 3 )What was the idea behind the first Volvo? 4 )Why were there not a lot of...
【单选题】When and why did all the employees receive a watch from the company?
A.
on 1933 when Volvo had manufactured 10,000 vehicles.
B.
on April 14, 1977 when Volvo celebrated its 50th anniversary.
【单选题】以下关于卵泡膜的描述中,哪一项错误?
A.
由卵泡周围的卵泡细胞形成
B.
与卵泡细胞相贴
C.
外层纤维多，细胞少
D.
内层细胞多，纤维少
E.
于次级卵泡时期开始分层
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