A company is experiencing network delays. The network administrator discovers that a worker in a location far from the MDF has connected an old 10BASE-T switch with redundant links to the existing network. How could this action be responsible for the impaired network performance?（）
A. Connecting a host to the old switch has created a broadcast storm.
B. The 10BASE-T switch forced the entire network to be reduced to 10 Mbps operation.
C. The old switch does not support VLANs, which has disabled the VLAN configuration of the entire the network.
D. The old switch does not support full-duplex operation, effectively forcing half-duplex operation throughout the network.
E. Spanning Tree Protocol has elected the old switch as the root bridge, creating inefficient data paths through the switched network.
查看答案
小企业会计准则下，不计提坏账准备。
A. 正确
B. 错误
《管子・牧民》“四维不张，国乃灭亡”的四维是指（）。
引入信号机械室的电力线，第m电源防雷箱级设在微电子设备（指计算机终端电源稳压器或UPS电源前），连接线截面积不小于（）mm2。
集中处理中心收到国外代收行贷记报单后，应按不同贷记方式分别进行处理，对立即贷记项下的头寸待退票期过后无退票通知方可解付，但根据协议规定需要国外代收行通知确认付款的，须在收到国外代收行的付款确认电后方可解付。对立即贷记的头寸待起息日后即可解付。
A. 正确
B. 错误
微信支付 
支付宝支付