She likes to spend time（）with her grandchildren.
A. play
B. to play
C. playing
D. played
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一位十进制数用四位二进制数表示的方法很多，常用的交换码是（）码。
Which statement correctly describes the Cisco implementation of RSTP？ （）
A. PortFast， UplinkFast， and BackboneFast specific configurations are ignored in Rapid PVST mode.
B. RSTP is enabled globally and uses existing STP configuration.
C. Root and alternative ports transition immediately to the forwarding state.
D. Convergence is improved by using sub-second timers for the blocking， listening， learning， and forwarding port states.
电流互感器二次接线、末屏接线紧固，端子清洁无氧化，无放电烧伤痕迹。
A. 正确
B. 错误
要取得并使用建设银行的网上银行进行网上支付，必须经过的步骤有（）。
A. 开立账户
B. 存入现金
C. 开户申请
D. 开户审批
E. 预约申报
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