诊断犬细小病毒最常用的血清学方法是（）
A.病毒分离
B.血凝及血凝抑制试验
C.琼脂扩散试验
D.补体结合试验
E.中和试验
参考答案：B
The doctor _____ smoke from then on. [ ]
A. told me not to
B. suggests me not to
C. advised me don't
D. ordered me to not
ZC-8型接地电阻测量仪用于测量（）的接地电阻。
