[问答题] 简述测试题目的三种形式（回忆性题目、识别性题目和结构化回答题目）各自的含义。

若某只封闭式基金的交易价格为0.877元，折价率为 -33.41%，则其单位净值为多少元？ 张某和老李发生邻里纠纷。在接受调节过程中，张某情绪非常激动，扬言要拿刀砍人。人民调解员小王担心事态恶化，欲采取措施。根据《人民调解法》，小王应当采取的措施是（）。 ["通知张某的亲属","向张莱工作单位报告","通知张某居住地委员会","向张某居住地派出所报告"] Which statement about CiscoWorks 2000 Inventory Manager is true?（） [" It uses SNMP v1."," It scans devices for hardware information."," It scans and records the operational status of devices."," When the configuration of a device changes, the inventory is automatically updated."] 核算废品损失过程中，可能贷记的账户有（）。 ["“基本生产成本”","“废品损失”","“应付工资”","“制造费用”","“原材料&rdquo"] 下列（）费用属于规费项目清单中社会保障费的内容。 ["养老保险费","失业保险费","劳动保险费","医疗保险费","财产保险费"] 简述测试题目的三种形式（回忆性题目、识别性题目和结构化回答题目）各自的含义。