主页
学科
搜索
账户
常见问题
当前学科:无人机培训综合练习
题目:
单选
卞列哪种卫星导航系统是由俄罗斯构建的()
A . GPS
B . 格洛纳斯
C . 伽利略
答案:
<查看本题扣1积分>
查看答案
答案不对?请尝试站内搜索
推荐知识点:
钢线的高度略低于钢刀高度,通常为()。
穿刺时采血者所持针头斜面向上,针与皮肤刺入角度为多少度,针头刺入皮肤后改变角度为多少度()。
下列液压马达中,机械效率最低的是()。
阅读材料,回答题。 Deport them or notIn a country that defines itself by ideals,not by shared blood,who should be allowed to come,work and live here?In the wake of the Sept.1 1 attacks these questions have never seemed more pressing.On Dec.11,2001,as part of the effort to increase homeland security,federal and local authorities in 14 states staged“Operation Safe Travel”-raids on airports to arrest employees with false identification(身份证明).In Salt Lake City there were 69 arrests.But those captured were anything but terrorists,most of themillegal immigrants from Central or South America.Authorities said the undocumented workers’illegal status made them open to blackmail(讹诈)by terrorists.Many immigrants in Salt Lake City were angered by the arrests and said they felt as if they were being treated like disposable goods.Mayor Anderson said those feelings were justified to a certain extent,“We’re saying we want you to work in these places,we’re going to look the other way in terms of what our laws are,and then when it’s convenient for us,or when we can try to make a point in terms of national security,especially after Sept.1 1,then you’re disposable.There are whole families being uprooted for all of the wrong reasons,”Anderson said.If Sept.1 1 had never happened.the airport workers would not have been arrested and could have gone oil quietly living in America.probably indefinitely.Ana Castr0,a manager at a Ben&Jerry’s ice cream shop at the airport,had been workin9 10 years with the same false Social Security card when she was arrested in the December airport raid.Now she and her family are living under the threat of deportation(驱逐出境).Castro’s case is currently waiting to be settled.While she awaits the outcome,the government has granted her permission to work here and she has returned to her job at Ben&Jerry’s.According to the author,the United States claims to be a nation__________.
罗斯福新政通过立法规定工人最低工资和最高工时的目的是()
简述电能表的耐压试验方法
是台风从东南向西北经过珠江三角洲某地时的风速变化示意图,回答下列问题。 台风什么时候最接近该地() 在19时风速突然降低是因为()
与血液运行关系密切的脏是()。
大地水准面处处与()垂直。
施工图中的()用细实线表示,它由水平方向的直线或与水平方向成300、450、600、900的直线和经上述角度转折的水平直线组成。