略写出预焙阳极生产主要工艺流程?

若, XY =^X,+^X

按我国现行工程变更价款的确定方法,施工中发生工程变更时,合理确定变更价款的原则是( )

H=Pn/P输入P输入=3/0.83=3.614.7三相异步电动机正在运行时，转子突然被卡住，这时电动机的电流会如何 变化？对电动机有何影响？电动机的电流会迅速增加,如果时间稍长电机有可能会烧毁.4.8三相异步电动机断了一根电源线后，为什么不能启动？而在运行时断了一 线，为什么仍能继续转动？这两种情况对电动机将产生什么影响？三相异步电动机断了一根电源线后，转子的两个旋转磁场分别作用于转子 而产生两个方向相反的转矩，而且转矩大小相等。故其作用相互抵消，合转 矩为零，因而转子不能自行启动，而在运行时断了一线，仍能继续转动转动方向的转矩大于反向转矩，这两种情况都会使电动机的电流增加。4.1__C /1.XT7sT T/X 7m① 当负载转矩为250N-m时，试问在1>1^和U'=0.8Un两种情况下电动机能否启动？Tn=9.55 Pn/nN=9.55*40000/1470=260NmTst/TN=1.2Tst=312NmTst=KR2U2/ (R22+X202)=312 Nm312Nm>250Nm所以U=Un时 电动机能启动。当U=0.8U时Tst=(0.82)KR2U2/ (R22+X202)=0.64*312=199 NmTst<TL所以电动机不能启动。

一个文件名字为rr、Z,可以用来解压缩得命令就是( )

"利润最大化"目标的缺陷在于[ ]。

下列不属于 交叉口交通管理的原则的是( )

甲股份有限公司2010年实现净利润8500万元。该公司2010年发生和发现的下列交易或事项中,会影响其年初未分配利润的有( )

在玉米中,基因b(深绿色叶片)、v(淡绿色)和y(无叶舌)是在第三染色体上。对这三个基因是杂合的杂种一代用三隐性个体进行测交,得到下列结果("+"表示野生型):+ v y 305b + + 275b + y 128+ v + 112+ + y 74b v + 66+ + + 22b v y 18(1)给出这三个基因在第三染色体上的排列顺序(2)写出两个测交亲本的基因型(3)这些基因间的图距是多少?并作图(4)并发系数是多少?

某组分的分配比为0.2,则它分配在流动相中的百分率是多少?

在格瑞达812数码印相机机的主视窗和菜单结构中,( )

邓小平指出:"一个党,一个国家,一个民族,如果一切从根本出发,思想僵化,迷信盛行,那它就不能前进,他的生机就停止了,就要亡党亡国。"这段话,非常深刻的阐明了( )

>35KV铅包电缆最大允许的高度差是( )米。

出示例1根据测定,成人体内的水分大约占体重的2/3,而儿童体内的水分约占体重的4/5。我体内有28千克的水分,可是我的体重才是爸爸的7/15。小明的体重是多少千克?(1)读题,找出已知条件和问题。(2)根据题意与线段图理解题中的条件和问题。(3)根据题意,启发学生:根据一个数乘分数的意义写出数量关系式。体重×4/5=体内水分重量师引导:这道题把哪个数量看作单位"1",是已知的?还是未知的?该怎样求?能不能根据上面的等量关系式,设未知数χ,再列方程求出?(4)学生尝试练习方程解答,个别板演,教师点评。

As she explored new interests and developed new potentials，Leah felt powerful internally.Section CDirections:There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on__with a single line through the centre.Passage OneQuestions 46 to 50 are based on the following passage.The Urbanization — migration away from the suburbs to the city center — will be the biggest real estate trend in 2015, according to a new report.The report says America's urbanization will continue to be the most significant issue affecting the industry, as cities across the country imitate the walkability and transit-oriented development making cities like New York and San Francisco so successful.As smaller cities copy the model of these "24-hour cities，''more affordable versions of these places will be created. The report refers to this as the coming of the "18-hour city，"，and uses the term to refer to cities like Houston, Austin, Charlotte, and Nashville, which are "positioning themselves as highly competitive, in terms of livability, employment offerings, and recreational and cultural facilities."Another trend that looks significant in 2015 is that America's largest population group,Millennials(千禧一代)，will continue to put off buying a house. Apartments will retain their appeal for a while for Millennials, haunted by what happened to home-owning parents.This trend will continue into the 2020s, the report projects. After that, survey respondents disagree over whether this generation will follow in their parents'footsteps, moving to the suburbs to raise families, or will choose to remain in the city center.Another issue affecting real estate in the coming year will be America's failing infrastructure. Most roads, bridges, transit, water systems, the electric grid, andcommunications networks were installed 50 to 100 years ago, and they are largely taken for granted until they fail.The report's writers state that America's failure to invest in infrastructure impacts not only the health of the real-estate market, but also our ability to remain globally competitive.注意:此部分试题请在答题卡1上作答。Questions 1 to 2 arebased on the conversation you have just heard.

兰格模式中,中央计划当局采取( )得出"均衡价格"体系。

被亚洲、非洲、大洋洲及南极洲所环绕的大洋是（ ）

在对社会现象得认识上,实证主义与人文主义所侧重得角度、方法与观点不同,主要表现在哪几个方面( )

对例4.6,如何通过迭代尝试的方法来确定正确的分类数?重新编写程序来完成正确的聚类。

下列不计入空气污染指数的污染物是（