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【单选题】
胸外心脏按压时，按压与松开的时间比为多少时，心排血量最大A.
1:01
B.
1899/12/31 0:01:01
C.
1:02
D.
1:03
E.
2:01
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A.
enthusiastic
B.
concerned
C.
doubtful
D.
cautious
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A.
interested
B.
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A.
Their pursuit of independence．考试大
B.
Their enthusiasm for conversation．
C.
Their ability to keep the city flourishing．
D.
Their devotion to developing a multiple culture．
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A.
作为期权买方和卖方的共同保证人
B.
设定最低资本保证金
C.
代替投资者进行询价
D.
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A.
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enthusiastic
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