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【多选题】
有关新生儿窒息复苏中胸外按压描述正确的是()A.
胸外按压的指征是：在至少30次有效的正压通气后，心率小于60次/分
B.
胸外按压由有节奏的按压胸骨构成
C.
心脏在胸腔内胸骨下1/3和脊柱之间
D.
当对胸骨的压迫放松时血液由静脉进入心脏
E.
胸外按压与人工呼吸的比率为15:2
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举一反三
【判断题】The book states that most common relationship problems between men and women are a result of fundamental physiological differences between the sexes.
A.
正确
B.
错误
【判断题】The book states that most common relationship problems between men and women are a result of fundamental physiological differences between the sexes.
A.
正确
B.
错误
【单选题】已知a1,a2是非齐次线性方程组Ax=b的两个不同的解,b1,b2是其导出方程组Ax=0的基础解系,k1,k2是任意常数,则方程组Ax=b的通解是
A.
k1b1+k2(b1+b2)+(a1-a2)/2
B.
k1b1+k2(b1-b2)+(a1+a2)/2
C.
k1b1+k2b2+(a1-a2)/2
D.
k1(b2-b1)+k2(b1-b2)+(a1+a2)/2
【简答题】Min O rder_____
【简答题】Because many books/articles are translated from different languages, the Sapir-Whorf hypothesis states that these translations may not preserve the exact meaning as it was intended. Give an example of...
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