雷雨后的线路巡视属于（）。
A.特殊巡视
B.单独巡视
C.定期巡视
D.故障巡视
参考答案：A
—It has been raining for nearly a week. Will it _________ long?
—No. It's _____ that we'll have a fine weekend. The sun will be shining again.
A．rain; report
B．last; reported
C．stop; reported
D．keep; report
根据存货经济订货量模型，经济订货量是能使订货总成本与储存总成本相等的订货批量。( )
