县级以上人民政府统计机构根据统计任务的需要,可以在统计调查对象中推广使用计算机网络报送统计资料。()
参考答案:对
—It's time to go to bed, Li Ping.
—Mum, I have a lot of homework to do, I won't go to bed ________ I finish it. [ ]
A. until
B. since
C. as soon as
D. after
用二维表数据来表示实体之间联系的数据模型称为 【1】 。