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问题
单项选择题
正常成人的血液总量约相当于体重的
A.7%~8%
B.15%
C.20%
D.60%
E.40%
答案
参考答案:A
选择题
All the preparations for the project ______, and we're ready to start.
A. completed
B. had been completed
C. complete
D. have been completed
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单项选择题
被认为是计量利率最精确的指标是指()
A.基准利率
B.到期收益率
C.单利
D.复利
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