更多“适合弱酸性药液的抗氧剂有（）”相关的问题
写出由下列条件确定的曲线所满足的微分方程： 曲线上点P（x，y）处的法线与x轴的交点为Q，且线段PQ被y轴平分。
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甲公司2016年净利润为250万元，2016年3月1日发放15万股股票股利，2016年5月1日增发了60万股普通股，10月31日回购了30万股普通股，年末的流通在外的普通股股数为120万股。甲公司的优先股为50万股，优先股股息为每股1元，优先股清算价值为每股2元。如果2017年7月7日甲公司普通股的每股市价为24元，则下列说法中正确的有（ ）。
A . 2016年每股收益为1.6元
B . 2016年流通在外普通股的加权平均股数为122.5万股
C . 2016年每股收益为1.63元
D . 2017年7月7日甲公司的市盈率为15
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与收益相关的政府补助用于补偿企业以后期间的相关费用或损失的，取得时确认为递延收益，在确认相关费用的期间计入当期损益。( )
A．正确
B．错误
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当一列车中一个高速开关发生故障时，列车仍可维持运行
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弯曲变形的大小和焊件的长度（)。A、成正比B、成反比C、无关
弯曲变形的大小和焊件的长度()。A、成正比B、成反比C、无关
A、成正比B、成反比C、无关
B、成反比C、无关
C、无关
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下列关于数据库系统的叙述中，正确的是（ ）。 A.数据库系统比文件系统管理的数据量更多B.
下列关于数据库系统的叙述中，正确的是（ ）。 A.数据库系统比文件系统管理的数据量更多 B.数据库系统中数据的一致性是指数据的大小一致 C.数据库系统增加了数据冗余 D.数据库系统减少了数据冗余
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车速传感器使用的类型除霍尔式外还有（）。
A.光电式
B.舌簧开关式
C.MRE（磁阻元件）式
D.其它选项全是
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大气环境影响评价中，联合频率可用于（）地面浓度的计算.
A.年平均 B.季平均 C.日平均 D.小时平均
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依据《评标委员会和评标方法暂行规定》规定，下列情况可不重新招投标的是()。
A.投标人少于三个B.所有投标被否决的C.第一次招标失败，但项目已经列入上级主管部门年度考核的项目;再招标，无法满足考核时间要求的项目D.投标人有三个，但两个报价高的且均为无效标
B.所有投标被否决的C.第一次招标失败，但项目已经列入上级主管部门年度考核的项目;再招标，无法满足考核时间要求的项目D.投标人有三个，但两个报价高的且均为无效标
C.第一次招标失败，但项目已经列入上级主管部门年度考核的项目;再招标，无法满足考核时间要求的项目D.投标人有三个，但两个报价高的且均为无效标
D.投标人有三个，但两个报价高的且均为无效标
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女性，40岁，子宫切除术后7天，阴道溢液明确诊断需作哪项检查（）
A . A.亚甲蓝试验
B . 靛胭脂试验
C . 肾显像
D . B型超声
E . 排泄性尿路造影
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社会主义时期处理民族问题的基本原则是实行民族区域自治政策。
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《水樫遣兴（二首其一）》的颔联是（）。
A.细雨鱼儿出，微风燕子斜。
B.去郭轩楹敞，无村眺望赊。
C.澄江平少岸，幽树晚多花。
D.城中十万户，此地两三家。
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People in the United States in the nineteenth century were haunted by the prospect that unprecedented change in the nation’s economy would bring social chaos. In the years following, 1820, after several decades of relative stability, the economy entered a period of sustained and extremely rapid growth that continued to the end of the nineteenth century. Accompanying that growth was a structural change that featured increasing economic diversification and a gradual shift in the nation’s labor force from agriculture to manufacturing and other nonagricultural pursuits. Although the birth rate continued to decline from its high level of the eighteenth and early nineteenth centuries, the population roughly doubled every generation during the rest of the nineteenth century. As the population grew, its makeup also changed. Massive waves of immigration brought new ethnic groups into the country. Geographic and social mobility--downward as well as upward--touched almost everyone. Local studies indicate that nearly three-quarters of the population--in the North and South, in the emerging cities in the Northeast and in the restless rural counties of the West--changed their residence each decade. As a consequence, historian David Donald has written, "Social atomization affected every segment of society, and it seemed to many people that all the recognized values of orderly civilization were gradually being eroded." Rapid industrialization and increased geographic mobility in the nineteenth century had special implications for women because these changes tended to magnify social distinctions. As the roles of men and women played in society became more rigidly defined, so did the roles they played in the home. In the context of extreme competitiveness and dizzying social change, the household lost many of its earlier functions and the home came to serve as a haven of tranquility and order. As the size of families decreased, the roles of husband and wife became more clearly differentiated than ever before. In the middle class especially, men participated in the productive economy while women ruled the home and served as the custodians of civility and culture. The intimacy of marriage that was common in earlier periods was rent, and a gulf that at times seemed unbridgeable was created between husbands and wives.
A. emigrated to other countries.B. often settled in the West.C. tended to change the place in which they lived.D. had a higher rate of birth than ever before.
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