10G设备设备的PMU板和风扇板（）显式创建，交叉板的业务和时钟主备保护（）显式配置。
参考答案：需要；不需要
自然灾害不包括()
A、地震
B、风灾
C、泥石流
D、交通事故
—Could you give us some advice about this competition?
—If you want to win first prize, your design for the museum must be________.[ ]
A. careful
B. obvious
C. clear
D. novel
