管理会计的内容包括（）。 ["预测与决策会计","正确决策","规划与控制会计","有效控制","业绩评价会计"]
酶活力及比活力？国际酶活力单位IU如何定义的？
You are the network consultant from Cisco.com. Please point out the reason that STP required when VLANs do not span access layer switches.（） [" ensure a loop-free topology"," protect against user-side loops"," support business applications"," risk of lost connectivity without STP"]
管理会计与财务会计的区别主要有（）。 ["职能目标不同","会计主体不同","资料时效不同","核算依据不同","信息精确度不同"]
特别提款权
简述动作技能的形成过程。
