已知 EX=－1， DX＝3，则＝（）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201707/7bda6ce3e4e649f4885a4fd87fdae3fa.png

2021-04-14

答案：

6

0
http://image.zhihuishu.com/zhs/onlineexam/ueditor/201707/4e02598ccc4443d3a5a16ec182a73d0a.png
1
http://image.zhihuishu.com/zhs/onlineexam/ueditor/201707/530c7ec1138f44febfcd8949474110c0.png
2
http://image.zhihuishu.com/zhs/onlineexam/ueditor/201707/3f12b8b853a042af82fa61cdd3464648.png
3
以下执行复制对象的按钮是()。 1、 2、 3、 4、http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/d614ab4af2de4a83bace061e91ea85ce.png
4
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

已知 EX=－1， DX＝3，则 ＝（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201707/7bda6ce3e4e649f4885a4fd87fdae3fa.png