用绝缘电阻表测量吸收比是测量()时绝缘电阻之比,当温度在10~30℃时吸收比大于1.3时合格.

用绝缘电阻表测量吸收比是测量()时绝缘电阻之比,当温度在10~30℃时吸收比大于1.3时合格.

A.15s和60s;

B.15s和45s;

C.20s和70s;

D.20s和60s

正确答案是A