I'd like you _ something about your hometown. [ ]
A. say
B. to say
C. saying
D. said
答案:B
闭合导线若按逆时针方向测量,则水平角测量一般观测()角,即()角。
A.左,外
B.右,内
C.左,内
D.右,外
管道交叉处理