万向传动装臵中间支承的常见损伤有（）。
A．中间支承前盖碎裂
B．中间支承后盖碎裂
C．轴承磨损
D．橡胶垫老化或损坏
参考答案：C, D
Anything _____ public interests has to be decided _____ the opinion of the majority. [ ]
A. which concerns; in
C. that concerns about; in
C. concerns; in
D. concerning; in
《广韵》三十六字母的唇音与传统三十六字母的唇音有何区别？
