二次积分http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/4fdc2143d4064c3db3371cea1b083d20.png（ ）
举一反三
- 单击标准工具栏上的（ ）按钮可以打开“设计中心"面板。1、http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/7a8ef85e77f8490babf1302f6cfb317f.png 2、 http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/9cb75f8a10154a279078690a7149876e.png 3、http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/451fea6688f4480fbf86d1a75006cfdc.png 4、http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/0eeb17dcbe1a455f84981040ae19ef0b.png
- 设http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/d6dde9bc7b6c4305bb6bece9138ceb03.png是连续函数，则二次积分http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/c6646b6be98f410a869ece0ba01c0ba1.png（ ）<br>
- 设http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/1bd7547996a1490b95321fae3647dfb1.png是连续函数，交换二次积分的次序：http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/1b9e962296664676bdc8fb3603776fbe.png（ ）<br>
- 设http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/5f9f81d9a1184c2eb383cb81ebbe2768.png，若http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/410a0d9f8b4a4f82a6818a45f4a3b450.png，http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/637f75734cb849caa773da5377f55f5e.png，http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/29aefd40f6c54e788587a2115dd02467.png，则http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/631634fcf7854ec88eedede14de7c1de.png之间的大小顺序为（ ）<br>
- 设积分区域D由http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/0c9ae1ed54164a58bd49dd327b8b9613.png和http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/106bacc400de4a258c3c2cc1e88f5e50.png围成，则http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/533bf3bfe8d7439fbe2689a974be1cf1.png（ ）<br>