水平角测量原理?
参考答案:
带有刻度的水平圆盘,且圆盘中心在同一铅垂线上,在度盘上截取相应的读数,则水平角为右目标读数减去左目标的读数。
下列词语中没有错别字的一组是[ ]
A.文身 大拇指 登录网站 珠联璧合
B.家具 刊误表 写作题纲 徇私枉法
C.布署 扫描仪 句式杂揉 棉里藏针
D.荧屏 哈蜜瓜 撤销处分 计日程功
用适当的代词填空。
1. David is American _____ is a good student.
2. Mary wants to do _____ homework with _____ classmates.
3. Tom's uncle does _____ work very well _____ is great.
4. The students are tired _____ want to have a rest.