微生物修复
Users have been complaining that their Frame Relay connection to the corporate site is very slow. The network administrator suspects that the link is overloaded. Based on the partial output of the Router# show frame relay pvc command shown in the graphic, which output value indicates to the local router that traffic sent to the corporate site is experiencing congestion?（） [" DLCI = 100"," last time PVC status changed 00:25:40"," in BECN packets 192"," in FECN packets 147"," in DE packets 0"]
简述蓄水工程在环境地质方面的影响？
植物挥发
阿诺德•汤因比在《历史研究》里写道：“中国最伟大、最富创造性的思想文化运动发生在兵连祸接的时代，即完成政治统一之前。”下列思想属于“这一时代”的是（）。 ["“道之以德，齐之以礼”","“罢黜百家，独尊儒术”","“心外无物，心外无理”","“经世致用，工商皆本&rdquo"]
简述选择萃取溶剂应遵守的原则。
