下列哪项不是影响血液粘度的因素（）
A.血液流速
B.红细胞的变形性
C.血细胞的聚集性
D.红细胞比容
E.温度
参考答案：A
—_____?
—She is tall with long straight hair. [ ]
A. What does your mother like
B. What does your mother do
C. What does your mother look like
D. What does your mother like doing
直流电动机的工作象限，所谓一象限运行，就是指在( )或( )象限运行。
A．①象限 B．②象限 C．③象限 D．④象限
