choose the best answer from the four choices.
A. Not many elderly people have Internet service at home.
B. Not many elderly people use online health information.
C. The elderly think online medical advice is very important.
D. The elderly don’t really like to use email or online banking.
查看答案
CASS坐标数据文件扩展名是“DAT”,其格式为:1点点名,1点编码,1点Y(东)坐标,1点X(北)坐标,1点高程…N点点名,N点编码,N点Y(东)坐标,N点X(北)坐标,N点高程
A. 对
B. 错
CASS坐标数据文件扩展名是“DAT”,其格式为:1点点名,1点编码,1点X(北)坐标,1点Y(东)坐标,1点高程…N点点名,N点编码,N点X(北)坐标,N点Y(东)坐标,N点高程
A. 对
B. 错
大动脉管壁
A. 弹性膜
B. 平滑肌
C. 二者均有
D. 二者均无
中动脉管壁
A. 弹性膜
B. 平滑肌
C. 二者均有
D. 二者均无