开关投运前为什么要做跳合闸试验？
参考答案：
检查开关跳、合闸机构及二次回路是否完好。
—Can you tell me ____________？ —She is in the computer lab.
A．where Linda was
B．where is Linda
C．where was Linda
D．where Linda is
签约过（）交易后柜员才会产生回单批量打印的待办任务。
A.合并回单签约
B.回单授权签约
C.指定回单生成机构维护
D.回单集中打印签约
