对二重积分<img src="https://zk.995w.com/lqwvjeImg/b0/b01c8da931451f36a56fefa1fa21fc52.png"style="width:122px;height:49px;">计算过程中,必须对积分区域<img src="https://zk.995w.com/lqwvjeImg/65/6553cf2590ec22e09c460b860da819c8.png"style="width:17px;height:17px;">进行分块的情况有( )<br>· 函数<img src="https://zk.995w.com/lqwvjeImg/53/53e401bc3522616b5a482b38bb3cf48c.png"style="width:51px;height:21px;">在区域<img src="https://zk.995w.com/lqwvjeImg/65/6553cf2590ec22e09c460b860da819c8.png"style="width:17px;height:17px;">上是分片函数<br>· 积分区域<img src="https://zk.995w.com/lqwvjeImg/65/6553cf2590ec22e09c460b860da819c8.png"style="width:17px;height:17px;">既非<img src="https://zk.995w.com/lqwvjeImg/1c/1c3e9ff1e0157b892ad337b870322feb.png"style="width:13px;height:15px;">型又非<img src="https://zk.995w.com/lqwvjeImg/62/62fade5e559a967b648f284d659f70b7.png"style="width:15px;height:17px;">型<br>· 积分区域<img src="https://zk.995w.com/lqwvjeImg/65/6553cf2590ec22e09c460b860da819c8.png"style="width:17px;height:17px;">的边界线中有分段函数<br>· 积分区域<img src="https://zk.995w.com/lqwvjeImg/65/6553cf2590ec22e09c460b860da819c8.png"style="width:17px;height:17px;">的边界线全部为曲线