设<img align="middle" alt="" src="/api/uploads/1530319/in-rich-contentcreated_at=1647290146">,<img align="middle" alt="" src="/api/uploads/1530320/in-rich-contentcreated_at=1647290146">,则<img align="middle" alt="" src="/api/uploads/1530321/in-rich-contentcreated_at=1647290146">( ).(单选题)
.4.,.
2.,.
0.,.
-2
出自:2024年国家开放大学答案