带电作业使用的固体绝缘材料，必须具有良好的（）。
A.加工性能
B.可塑性
C.耐热性
D.耐腐蚀性
参考答案：A
Besides hotels,there are also families visitors can experience the warmth and kindness of the local
people. [ ]
A. which
B. that
C. what
D. where
什么是明洞？试述明洞的结构类型、受力特点和适用条件？
