关于压缩机发生机械故障的现象，下列说法不正确的是（）。
A．电机电流超高
B．机体发出异常声响
C．压缩机出口压力高
D．轴承温度超高
参考答案：C
棱长为1分米的正方体，它的棱长总和是______分米，表面积是______平方分米，体积是______立方分米．
Many sports players became well-known after they joined in the Beijing Olympic Games.
The underlined part means " ______ ". [ ]
A. rich
B. strong
C. lucky
D. famous
