离子选择性电极的选择性系数可用于( )。
A．估计电极的检测限
B．估计共存离子的干扰程度
C．校正方法误差
D．估计电极的线性响应范围
参考答案：B
诊断葡萄胎最有价值的为()
A．停经及不规则 * * 流血
B．子宫异常增大，大于妊娠周数
C．尿中HCG呈高值
D．妇科检查于附件区触到囊性肿物
E．血中HCG呈低值
A. Sure. What is it B. It’s very nice of you to say so. C. It’s nothing. D. Have a nice trip! E. Certainly. Here you are.
A:Excuse me. Could you give me a hand B:______ A:I want to move this desk out of the office.
