如图所示，三物体用细绳相连，mA=1kg，mB=3kg，mC=1kg，A、C与水

(46) Students of United States history, seeking to identify the circumstances that encouraged the emergence of feminist movements, have thoroughly investigated the mid-nineteenth-century American economic and social conditions that affected the status of women. These historinans, however, have analyzed less fully the development of specifically feminist ideas and activities during the same period. (47) Furthermore, the ideological origins of feminism in the United States have been obscured because, even when historians did take into account those feminist ideas and activities occurring within the United States, they failed to recognize that feminism was then a truly international movement actually centered in Europe. American feminist activists who have been described as "solitary" and "individual theorists" were in reality connected to a movement—utopian socialism—which was already popularizing feminist ideas in Europe during the two decades that culminated in the first women’s rights conference held at Seneca Falls, New York, in 1848. (48) Thus, a complete understanding of the origins and development of nineteenth-century feminism in the United States requires that the geographical focus be widened to include Europe and that the detailed study already made of social conditions be expanded to include the ideological development of feminism.

The earliest and most popular of the utopian socialists were the Saint-Simonians. The specifically feminist part of Saint-Simonianism has, however, been less studied than the group’s contribution to early socialism. This is regrettable on two counts. By 1832 feminism was the central concern of Saint-Simonianism and entirely absorbed its adherents’ energy; hence, by ignoring its feminism, European historians have misunderstood Saint-Simonianism. Moreover, since many feminist ideas can be traced to Saint-Simonianism, European historians’ appreciation of later feminism in France and the United States remained limited.

(49) Saint-Simon’s followers, many of whom were women, based their feminism on an interpretation of his project to reorganize the globe by replacing brute force with the rule of spiritual powers. The new world order would be ruled together by a male, to represent reflection, and a female, to represent sentiment. This complementarity reflects the fact that, while the Saint-Simonians did not reject the belief that there were innate differences between men and women, they nevertheless foresaw an equally important social and political role for both sexes in their utopia.

Only a few Saint-Simonians opposed a definition of sexual equality based on gender distinction. This minority believed that individuals of both sexes were born similar in capacity and character, and they ascribed male-female differences to socialization and education. (50) The envisioned result of both currents of thought, however, was that women would enter public life in the new age and that sexual equality would reward men as well as women with an improved way of life.

(46) Students of United States history, seeking to identify the circumstances that encouraged the emergence of feminist movements, have thoroughly investigated the mid-nineteenth-century American economic and social conditions that affected the status of women.

下列实验操作中正确的是[ ]

A．点燃除H₂外的可燃气体也先检验气体纯度

B．碱液流到桌子上，先用水洗，后用稀醋的溶液中和

C．刚取用浓酸的胶头滴管，防止酸液滴到桌上，将尖嘴向上

D．称取5.0gNaOH固体时，托盘上必须先各放一只质量相同的小烧杯

以下各项中，不属于组织整体激励计划的是（）。

A． 股票增值计划

B．员工持股计划

C．利润分享计划

D． 个人发展计划

日常维修和维护的开支来源，需要租约各方通过( )来确定具体履行方式。

A．沟通

B．协商

C．洽谈

D．交流

某地区卫生局委托该地区政府采购中心公开招标采购一批多功能监护设备。采购中心于7月2日在省级政府采购媒体上刊登了招标公告，并开始发售招标文件。招标文件发出后，区卫生局发现招标文件存在两处错误，便要求采购中心作出更正。采购中心接受了区卫生局对于错误更正的要求，并于7月10日向已经购买招标文件的A、B、C、D、E五家供应商发出招标文件勘误通知，五家供应商均于当日对勘误通知作出了回函确认。
采购中心把开标和评标的时间定于7月22日。开标后，投标价格最低的是A供应商。评标结束后，评标委员会推荐的中标人为B供应商。采购中心于7月23日公布了评标结果。
A供应商获悉评标结果后，认为其投标价格比B供应商低20%，产品完全满足招标文件要求，而且B供应商投标产品有一个指标不满足招标文件要求，认为评标结果不公正，遂于公布评标结果的当日打电话向采购中心和区卫生局主管人员提出质疑。采购中心和区卫生局均未对A供应商的质疑作出明确答复。8月15日，采购中心向B供应商发出了中标通知书。得知情况后，9月5日，A供应商向省卫生厅和区财政局投诉。省卫生厅拒绝受理，理由是该项目为政府采购项目，其招标采购活动不属省卫生厅监管范围。区财政局也拒绝受理，理由是A供应商未进行有效质疑。于9月30日，A供应商又向区人民法院对采购中心提起民事诉讼，要求法院责令采购中心改正其错误评标结果，并赔偿其参加投标的费用和损失。区人民法院依法驳回了A供应商的诉讼请求，理由是A供应商诉讼对象错误。

在招标过程中，采购中心的做法存在哪些问题？