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怎样对调查问卷进行信度检验？

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癫痫状态最常见的原因（）

A. 饮酒
B. 过度疲劳
C. 感染
D. 不规范AEDs治疗
E. 不恰当地停用AED

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热力学三大定律也适用于（）。

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心轨工作边至护轨工作边的最小间距，窄轨道岔规定，900mm轨距不小于（）。

A. 552mm
B. 572mm
C. 574mm
D. 872mm

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The network administrator wants to enable an EtherChannel between two switches in "on" mode. The administrator connects the cables and enables the interfaces， but while configuring the EtherChannel in the first switch， a spanning-tree loop was detected. Which two of these procedures can avoid this problem？（）

A. Configure the EtherChannel as "desirable" first.
B. Assign all interfaces to the same VLA
C. Disable PortFast on the interfaces in the EtherChannels.
Disable all interfaces first.
E. Fast Ethernet and Gigabit Ethernet ports cannot be assigned to the same EtherChannel.
Fix cabling problems.

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