相互掺透或整合地选择和组合幼儿园各领域教育活动的优点是（）。 ["减少儿童活动转换的困难","使领域课程能为幼儿提供各领域教育中的关键概念","使各领域形成平行关系，容易使不同领域之间达成平衡","使教育活动的设计简单化并具有较强的可操作性"]
下列种间关系（）属于互利互生。 ["豆科植物与禾本科植物","豆科植物也根瘤菌","鸟与树"]
Which two statements or sets of statements are true about the application of the qos pre-classify command？（） [" If the classification policy is based upon the ToS byte， the qos pre-classify command is required because the ToS byte only appears in the inner IP header."," The ToS byte is copied to the outer header by default. Therefore， the qos pre-classify command is not necessary."," With GRE encapsulation， the qos pre-classify command is applied on the tunnel interface. This practice allows for different OoS configurations on each tunnel."," With GRE encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface."," With IPsec encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface."]
噬菌体
琥珀热处理特征包体为（） ["气泡呈扁平拉长状定向排列","变为半可切性","遇乙醚变软","太阳光芒"]
学前教育衔接，就是指学前教育机构同（）、（）以及（）同（）的衔接，保证学前教育机构教育功能，和幼儿成长发展的连续性。
