A.30° B.45° C.60° D.90°

练习题库2022-08-02  13

问题 A.30°B.45°C.60°D.90°

选项 A.30°
B.45°
C.60°
D.90°

答案 B

解析
转载请注明原文地址:https://www.tihaiku.com/gongwuyuan/2600452.html

最新回复(0)