教师要将（）教育有机渗透到本学科教学内容和教学过程中。
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深圳C网用户呼叫联通异地固话和异地手机的选路方式为（）。
A. 发端接入/受端入网
B. 受端入网/发端接入
C. 发端接入/发端接入
D. 受端入网/受端入网
开关箱中漏电保护器的额定漏电动作时间不应大于0.1秒。
A. 正确
B. 错误
Which of the following characteristics describe the Root Guard feature？（Choose all that apply.）（）
A. The port must be put into forwarding state manually after root-inconsistent state has beencorrected
B. A Root Guard port receiving superior BPDU goes into a root-inconsistent state
C. A Root Guard port receiving inferior BPDU goes into a root-inconsistent state
D. While the port is in a root-inconsistent state no user data is sent across that port
E. The port returns to a forwarding state if inferior BPDUs stop
F. It should be applied to all switch port
()DB11/418《电梯日常维护保养规则》标准规定,电梯施工单位负责人对使用单位的电梯安全全面负责。
A. 正确
B. 错误
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