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【单选题】
胸骨左缘第1、2肋间及其附近区域听到连续性杂音见于( )A.
二尖瓣狭窄
B.
动脉导管未闭
C.
主动脉瓣关闭不全
D.
主动脉瓣狭窄
E.
二尖瓣关闭不全
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反馈参考答案：
举一反三
【简答题】脾胃虚弱之泄泻，治疗宜首选：
【单选题】No rule of human conduct can be considered important in promoting the welfare of man unless
A.
it is in harmony with his nature.
B.
it has been turned into a law.
C.
it has nothing to do with his highest fitness.
D.
it disagrees with his highest ideals.
【单选题】Which of the following can best be applied to the Fed Reserve's conduct of monetary policy?
A.
Boldness.
B.
Confidence.
C.
Caution.
D.
Moderateness.
【单选题】No rule of human conduct can be considered important in promoting the welfare of man unless
A.
It is in harmony with his nature．
B.
it has been turned into a Law．
C.
it has nothing to do with his highest fitness．
D.
it disagrees with his highest ideals
【单选题】下列关于细胞培养用品清洗的说法,不正确的是
A.
因器皿的材料、结构、使用方法不同,清洗方法也有区别
B.
一般玻璃器皿的清洗步骤包括浸泡、刷洗、煮沸和冲洗四个步骤
C.
细胞培养用器皿清洗后要求干净透亮、无油迹、无残留物质
D.
每次细胞实验使用过的器皿,实验结束后立即泡在清水或洗涤液中
【单选题】下列关于细胞培养用品清洗的说法，不正确的是（）
A.
因器皿的材料、结构、使用方法不同，清洗方法也有区别
B.
每次细胞实验使用过的器皿，实验结束后立即泡在清水或洗涤液中。
C.
一般玻璃器皿的清洗步骤包括浸泡、刷洗、煮沸和冲洗四个步骤。
D.
细胞培养用器皿清洗后要求干净透亮、无油迹、无残留物质。
【多选题】关于细胞培养的说法,正确的是
A.
一个重要的原则是防止污染
B.
细胞房一般有三层空间，最外面的一层洁净度最高
C.
细胞实验需要穿细胞房专用的实验服，除清洗外，禁止穿到外面
D.
一般用75%的酒精拖地，用84消毒液清洁操作台面
【单选题】It can be inferred from the third paragraph that______.
A.
four-fifths of conduct disorder is caused by nurture
B.
one-fifth of conduct disorder is caused by nurture
C.
one-fifth of conduct disorder is caused by nature
D.
four-fifths of conduct disorder is caused by nature
【单选题】关于动物细胞培养基的说法正确的是()
A.
动物细胞培养基灭菌需要高压除菌
B.
人工合成培养基包含多种营养成分和微量元素，因此被广泛使用
C.
无血清培养基是目前大规模工业化生产的首选培养基
D.
血清是一种天然易得的培养基
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