功能城市化
导致土壤侵蚀发生的动力因素有哪些？
Which two QoS classification and marking statements are true？（） [" In a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit."," In an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field"," In an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values."," The differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet."," The 802.10 standard uses a three bitfield referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS."]
幼儿园游戏活动与教学活动的结合类型，大致可以分为（）。 ["分离式、插入式和整合式","分离式和整合式","插入式和整合式","分离式和插人式"]
校准
装卸酸碱要注意哪些事项？
