草坪铺植之前就应对选定的草源地进行去除野草和施肥等工作,使草源强健。( )
参考答案:对
— What do you think of my suggestion?
— I'm sorry. Er… I ______ about something else. [ ]
A. thought
B. am thinking
C. was thinking
D. had thought
测绘技术总结编写依据有( )。
A.上级下达任务的文件或合同书
B.技术设计书、有关法规和技术标准
C.有关专业的技术总结
D.内容真实、全面,重点突出
E.测绘产品的检查、验收报告