UPS不间断电源适用于中断供电时间为()级的电力负荷。
A．min
B．mmin
C．s
D．ms
参考答案：D
One morning my patience was growing thin during Mark talked once too often, and then I made a novice-teacher's mistake.
A．when
B．as
C．while
D．whenever
五味子散1功效与作用
