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【多选题】
以下属于光学经纬仪照准部构件的是( )。A.
望远镜
B.
水平制动螺旋
C.
水平微动螺旋
D.
度盘变换手轮
E.
脚螺旋
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举一反三
【单选题】【 2016 年联考真题】假设所有域名服务器均采用迭代查询方式进行域名解析。当主机访问规范域名为 www.abc.xyz.com 的网站时,本地域名服务器在完成该域名解析 的过程中,可能发出 DNS 查询的最少和最多次数分别是()
A.
0,3
B.
1,3
C.
0,4
D.
1,4
【简答题】幼儿两餐间隔的时间应为( )小时，保证幼儿每次进餐时间不少于( )分钟，不应过分催促幼儿。
【简答题】A farmer grew some vegetables in his garden. One day his wife was ill and he had no money. He had to sell some cabbages and carrots in the market. The next morning he took two baskets of vegetables to...
【简答题】A poor farmer had a friend who was famous for the wonderful apple trees he grew. One day, his friend gave the farmer a young apple tree and told him to plant it. The farmer was pleased with the gift...
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