UPS过载保护
参考答案：负载超载时，UPS进行的自我保护。
Really great people always see the best in others; it is the little man who looks for the worst and finds_________.
A．one
B．it
C．that
D．them
采用（）对保存不十分干燥的种子较为有利。
A、铁盒
B、纸袋
C、玻璃瓶
D、塑料袋
