目前广泛采用瓷或钢化玻璃制造绝缘子,是因为它们具有(),能抵抗气温和晴雨等气候的变化。
A、热稳定性差
B、伸胀性小
C、击穿电压低于闪络电压
D、不变
参考答案:B
—Shopping with me?
—Sorry. I have a lot of clothes _____ . [ ]
A. to wash
B. washed
C. wash
D. to be washing
紫白癜风的特点有哪些?