理论构思
简答金属硫化物矿床的表生分带？
1884年，意大利一位青年法学家菲力出版了一本著作，奠定了西方犯罪社会学理论的基础，这本著作是（） ["《论犯罪与刑罚》","《犯罪人论》","《犯罪社会学论》","《社会行动的结构》"]
常用的安全检查方法有哪些？
Refer to the exhibit. What is the effect when the switchport priority extend cos 3 command isconfigured on the switch port interface connected to the IP phone？（） ["Effectively， the trust boundary has been moved to the PC attached to the IP phone","The computer is now establishing theCoS value and has effectively become the trust boundary","The IP phone is enabled to override with aCoS value of 3 the existing CoS marking of the PCattached to the IP phone","The switch will no longer tag incoming voice packets and will extend the trust boundary to thedistribution layer switch","RTP will be used to negotiate aCoS value based upon bandwidth utilization on the link"]
钻薄板工件上的孔时，为什么不能用普通麻花钻头？
