基础地理信息标准数据的数据内容要求规定,______以下比例尺可以不含地籍测量数据。
A.1:1000 B.1:2000 C.1:5000 D.1:10000
参考答案:B
—Sorry,I can’t go camping with you.I have to prepare well enough for the entrance exam.
—________! We can camp together next time.
A.Don’t say so
B.Congratulations
C.Good luck
D.No problem
只允许红细胞单行通过的血管是( )
A.毛细血管
B.肺动脉
C.上腔静脉
D.肾动脉