西楚霸王项羽的出生地位于江苏( )南部，项王故里现已成为该地重要的旅游景点。
A．宿迁
B．徐州
C．盐城
D．淮安
参考答案：A
补全对话。
A: Good afternoon!
B: Good afternoon!
A: Can you paint?
B: Sorry, 1_______.
A: So many clubs here. 2_______?
B: I’m not sure.
A: Can you 3_______ chess?
B: Yes, but not very well. 4_______?
A: I can play it well, but I like singing very much. So I want to join 5_______.
B: Me, too. I think we can go to the music club together.
DTM-452C用后方交会时dHD代表（）
A.在每个方向分配的HA误差
B.已测距离与计算距离之间的VD误差
C.已测距离与计算距离之间的HD误差
