碱性染料呈碱性吗
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判断题对还是错,科学作业
下列叙述正确的是( )A、稀释浓硫酸时应将水倒入浓硫酸中,并用玻璃棒不断搅拌 B、将100g溶质质量分数为98%的浓硫酸稀释为49%,需加水50g C、100mL水和100mL酒精混合后体积小于200mL,说明分
电功和电热的计算题某快速电热水壶的铭牌上标有“220V 1200W”的字样.小李同学讲1.8kg、25℃的水装入壶中,给电水壶通电正常工作5min.设电热水壶消耗的电能有95%被水吸收,水的比热容为4.2×10&s
电热的计算题某电热饮水器上有A、B两根电热丝,将两根电热丝串联接在电源上,20min可将饮水器中的水加热至沸腾;若将A单独接到同一电源上,同样使初温和质量相同的水加热至沸腾,需要8min;
曲线y=2x^3上一点A(1,2)则A处的切线斜率等于
求当x趋近于0时,[(1+x)/(1-x)]^x的极限是?
武动乾坤的结局(欢欢死了,但又转世到那个新世界,然后林动去找她)算悲剧还是喜剧
明明和欢欢分别从跑道线的A,B两点出发
Is this the factory _____ a lot of students visited yesterday?
4.Is this the factory _____ a lot of students visited yesterday?定语从句 很模糊4.Is this the factory _____ a lot of students visited yesterday?A.the one B.which C.who D.whom5.Is this factory _____ a lot of students visited yesterday?A.the one
Sally,together wtih her students_____visiting the zoo this time yesterday.这里应该填单数还是复式呢?
My father is going to Beijing tomorrow "tomorrow"划线,就划线部分提问
当x趋于无穷时,X+1/X的极限是多少?
train,he,to,going,Beijing,is,by(.)连词成句
x趋于无穷时,(x/(x+1))^x求极限
He is going to Beijing with his father by train 怎么对his father提问?
5 6题啊
求4.5.6题 答案 作业 急呀 速度好评 谢谢啦
4.5.6.题 我要忙着写我的作业懒得帮我弟想了 快来答吧4.5.6.题 我要忙着写我的作业懒得帮我弟想了 2年级的 快来答吧
昨天下午英语是last afternoon还是yeterday afternoon
上星期六下午学生们参观了养老院.The students___________last Saturday afternoon.别怕那只狗,它从不咬人.____________________.It never bites people.His uncle _______(return)from Australia in a week.When you see you teachers,you sh
Do you know who was the last person___the room yesterday afternoon?A:leave B:leaving C:to leave D:left还是搞不明白为什么不选D,为什么是过去进行时?
lime^x-1 /2 x趋向于0,求极限,为什么最后能变成x/2x
Jim was the last ___(leave) the classroom yesterday.谁若知道就告诉我,
who was the last person ___ the office yesterday A leave B left C to leave D leaves 理由!
七年级上册科学作业本A第3节10题11题
七年级上册科学作业本A第四节第十一题怎么写?
四年级上册《黄冈小状元》(数学)的71页得培优作业
数学黄冈小状元四年级上册40页培优作业怎么做
many students ________ in yesterday's sports meeting.A.joined B.took parti will ______ an important meeting tomorrow morning.A.attend B.take part in
His sister______ a speech contest yesterday. A.entered B.went in C.takes part in D. took part in为什麽答案是D,而不是A?语法点中明明有enter a contest 这一点.并请说明enter, take part in ,join in和join的区别.
82.______of the students are going to take part in the reading contest.A.Two-third B.Two-threes C.Two-thirds D.Twos-thirds