关于类风湿因子正确的叙述是
A．抗正常IgG的抗体B．抗变性IgG的抗体C．抗IgM的抗体D．多数为IgG类E．正常人血清中不存在
参考答案：B
Hua Jianhui was appointed__________vice-govenor of Anhui province in________place of the former, Wen Haiying.
A．/; /
B．the; /
C．/; the
D．a; the
以统计图表示各科室住院患者的构成情况，可选用（）
A.条图
B.百分比条图
C.直方图
D.普通线图
E.圆图
a Jianhui was appointed__________vice-govenor of Anhui province in________place of the former, Wen Haiying.