题目内容

某班有50名学生,考试后老师想迅速计算出所有学生的平均分,可以使用的函数是()

A. MAX
B. MIN
C. SUM
D. AVERAGE

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Which two statements are true when the extended system ID feature is enabled? ()

A. The BID is made up of the bridge priority value(two bytes) and bridge MAC address (six bytes).
B. The BID is made up of the bridge priority (four bits), the system ID (12 bits), and a bridge MAC address (48 bits).
C. The BID is made up of the system ID (six bytes) and bridge priority value (two bytes).
D. The system ID value is the VLAN ID (VID).
E. The system ID value is a unique MAC address allocated from a pool of MAC addresses assigned to the switch or module.
F. The system ID value is a hex number used to measure the preference of a bridge in the spanning-tree algorithm.

2岁的孩子和5岁的孩子对于玩球话题的谈话有不同的内容,这说明语言话题会受到()

()的所有者提供要素服务分别得到各自的报酬,分别对应为地租、工资、利息和利润。

A. 劳动要素
B. 生产要素
C. 服务要素
D. 管理要素

发车前,眼看、手指出站信号机,确认开放正确后,口呼“×道出站信号好(了)。”

A. 正确
B. 错误

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