简述石墨填料的特点。
参考答案:(1)各向异性;
(2)密封、弹性和柔软性;
(3)耐热性;
(4)耐腐蚀性;
(5)自润滑性。
—You watched the fashion show last night, didn’t you?
—Yes, _____ I missed the beginning. [ ]
A. so
B. and
C. but
D. then
公共文明指数测评对公共环境有什么要求?