The Monkey Buffet Festival is on the last Sunday of November. It is a great day for monkeys in Thailand(泰国). The festival has a history of twenty-five years. People there think monkeys can bring good luck to them. So, to thank monkeys, they have this special festival.

    On that day every year, people put lots of fruit, vegetables, cakes and even drinks on the tables outside. They are all for monkeys. Many people come to see the monkeys on that day.

    During the festival, there are a lot of interesting activities about monkeys. Young people always dress like monkeys. And they sing and dance and play some music on the street.

    Monkeys always live in groups. Most of them live in the trees. They are good at running and jumping. They eat fruit, vegetables, flowers and birds' eggs. Monkeys are clever. Do you think so?

设抛物线y²=4x的焦点为F，准线为l．已知点C在l上，以C为圆心的圆与y轴的正半轴相切于点A．若∠FAC=120°，则圆的方

程为____．

如图所示是用于气体制备、干燥（或除杂质）、性质验证、尾气处理的部分仪器装置（加热及夹持固定装置均已略去，各装置可重复使用也可不用）．请根据下列要求回答问题．

（1）若用A﹣C﹣D﹣B组合进行氢气还原氧化铜实验．分液漏斗中的试剂是盐酸，C中试剂是水，其作用是 ____　；A中反应开始一段时间后，再加热B．加热B之前的实验操作是 ____．

（2）为验证氯气不能使干燥的红布条褪色，置红布条于B中，按A﹣C﹣B﹣D连接成实验装置体系．A锥形瓶中试剂选用高锰酸钾晶体，则分液漏斗中的液体是 ____（填名称）；C中试剂是 ____（填名称）．已知高锰酸钾反应生成+2价的锰离子，写出此法制备氯气的离子方程式　 ____

（3）为了进行氨的催化氧化实验，若锥形瓶中盛装足量的Na₂O₂粉末，分液漏斗中盛装浓氨水，慢慢打开分液漏斗的活塞，产生的气体通过红热的铂粉，各仪器装置按气流方向从左到右连接顺序是（填字母） ____　；装置B中发生反应的化学方程式为　 ____．

下列措施中不符合城市生态工程建设基本原理的是(    )