（）是德国的教育家，德国幼儿园的创始人。他把艺术教育纳入幼儿的教育活动之中， ["卢梭","罗杰斯","福禄倍尔"]
关于工程网络计划中虚工作的说法，错误的是（）。 ["虚工作表示工作之间的逻辑关系","虚工作的总时差和自由时差均为零","虚工作的持续时间为0","在双代号网络计划中存在虚工作"]
短期总供给曲线表明（） ["总需求与价格水平同方向变动","总需求与价格水平反方向变动","总供给与价格水平同方向变动","总供给与价格水平反方向变动"]
人性假设理论中的经济人假设最早由（）在《国富论》提出的。 ["亚当•斯密","泰勒","埃尔顿•梅奥","马斯洛"]
Which of the following fragments might cause errors？（） [" String s = "Gone with the wind"；String t = " good "；String k = s + t；"," String s = "Gone with the wind"；String t；t = s[3] + "one"；"," String s = "Gone with the wind"；String standard = s.toUpperCase（）；"," String s = "home directory"；String t = s - "directory"；"]
什么叫漏电闭锁？
