妊娠期母体血液变化,哪项是不恰当的()
A.血细胞压积降低
B.血容量平均增加1450ml
C.血浆纤维蛋白原减少
D.血沉增快
E.白细胞,主要是中性多核细胞增加
参考答案:C
下列方程中,有两个不相等实数根的是( )
A.x2-2x-1=0
B.x2-2x+3=0
C.x2=2x-3
D.x2-4x+4=0
(2013·北京四中期中测试)—David, your application for a loan has ________.
—Thank goodness! I badly need it now.
A.gone through
B.pulled through
C.taken over
D.signed over