个人在参与人际交往时用以要求自身的有关礼仪规范称为()。
A.个人礼仪
B.公共礼仪
C.仪态礼仪
D.仪容礼仪
参考答案:A
People from all over the world ________China on the successful launch of Tiangong-1. [ ]
A. celebrated
B. greeted
C. congratulated
D. enjoyed
控制系统计算机仿真中的“实现问题”是什么含意?