影响介质损失的因素有哪些？
参考答案：
影响介质损失的因素有温度、湿度、电场强度和施加电压的频率。
Words like “discount” never fail to ________ people, specially women，though they might not need what is being promoted.
A．occur to
B．reply to
C．appeal to
D．stick to
直肠粘膜压片法用于诊断（）.
A.旋毛虫病
B.血吸虫病
C.猪带绦虫病
D.弓形虫病
E.蛲虫病
