诊断妊娠期女性贫血的标准为血红蛋白浓度低于（） A.140g／L B_爱下问搜题

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问题单项选择题

诊断妊娠期女性贫血的标准为血红蛋白浓度低于（）

A.140g／L

B.130g／L

C.120g／L

D.110g／L

E.100g／L

答案

参考答案：E

选择题

Sales of CDs have greatly increased since the early 1990s, when people _______to enjoy the advantages of this new technology.

A. begin
B. began
C. have begun
D. had begun

问答题简答题

什么是股利？为什么股利是重要的？