1. In an extended family, people live in different houses.()
2. An extend family includes at least three generations.()
3.In an extended family, children are looked after by their grandparents because their parents are traveling around.()
4. Extended families can be found all over the world.()
5. Children can live happily with their parents and grandparents.()
用凯氏定氮法测定肉制品中的蛋白质含量前,需向定氮瓶中加入()。
A. 硝酸
B. 硫酸
C. 硫酸钠
D. 盐酸
属于CT设备采样系统关键部件的是
A. 计算机
B. 模数转换器
C. 图像显示器
D. 探测器
E. 多幅照相机
聚焦涉黑涉恶问题突出的重点地区、重点行业、重点领域,把打击锋芒始终对准群众反映最强烈、最深恶痛绝的各类黑恶势力违法犯罪。这句话对吗?