题目内容

在配菜时，任何产品任何原料都应该按照规定逐一（）。

A. 过手
B. 检查
C. 过称
D. 筛选

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播音是指播音员和节目主持人运用有声语言和副语言，通过广播、电视传媒所进行的传播住处的创造性的活动。

A. 正确
B. 错误

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Which three statements are true about the voice VLAN feature on a Catalyst 2950 switch？（Choose three.）（）

A. The CoS value is trusted for 802.1p or 802.1q tagged traffic.
B. The voice VLAN feature is disabled by default.
C. The IP phone accepts the priority of all tagged and untagged traffic and sets the CoS value to 4.
D. When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.
E. PortFast is automatically disabled when a voice VLAN is configured.
F. The default CoS value for incoming traffic is set to 0.

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