A:要配置相同质量分数的甲、丙两种物质的饱和溶液,应该将温度控制t1℃
B:t2℃时,将30g甲物质加入到50g水中不断搅拌,形成的溶液中溶质的质量分数是37.5%
C:要从甲物质的饱和溶液中获得晶体甲,可采用降温结晶的方法
D:将丙物质的饱和溶液转化为不饱和溶液可以采用加水或降温的方法
In recent years advances in medical technology have made it possible for people to live longer than in the past. New medicines and machines are developing every day to extend life. However, some people, including some doctors, don't agree with these life extending measures, and they say that people should have the right(权利)t o die when they want, They say that the quality of life is as important as life itself, and that people should not be forced to go on living when conditions of life have become unbearable. They say that people should be allowed to die with dignity(尊严) and to decide when they want to die. Others don't agree and say that life under any conditions is better than death and that the duty of doctors is always to extend life as long as possible. And so the quarrel goes on and on without a definite(明确的) answer.
2014年3月5日,国务院总理***作政府工作报告指出,要推进工资集体协商,加强和改进国有企业负责人薪酬管理,在事业单位逐步推行绩效工资,健全医务人员等适应行业特点的薪酬制度,完善艰苦边远地区津贴增长机制。对这些收入认识正确的是( )
炎炎夏天,甲安装队为A小区安装66台空调,乙安装队为B小区安装60台空调。两队同时开工且恰好同时完工。甲队比乙队每天多安装2台,设乙队每天安装x台,根据题意下面方程正确的是( )
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