大联考答案

①萃取时应控制V。/V的比值为②反萃取获得NSO,溶液的实验操作是(5)制iOOH。向NiSO,溶液滴加NaOH溶液，并同时加入NaCIo可以制得用作镍镉电池正极材料的OOH。为测定...

3.甲基叔丁基醚(MTBE)是一种性能优良的高辛烷值汽油添加剂和抗爆剂，工业上用异丁烯(B)与男醇在催化剂作用下合成MTBE:CH,OH(g)+B(g)一MTBE(g)。向恒温恒容容器中...

名校联盟2022~2023学年高二年级开学联考·化学参考答案、提示及评分细则1.B2.C3.A4.D5.A6.D7.C8.A9.B10.B11.A12.D13.B14.C15.D16.B17.(1)500mL容量瓶；胶头滴管（...

4H+02+4|=2I2+2H20时间短关系A.AB.BC.CD.D8.无水FC3常作为芳烃氯代反应的催化剂。某研究小组设计了如图流程，以废铁屑（含有少量碳和SiO2杂质)为原料制备无水FeC...

(2)球形冷凝管(2分)；CoH;NH+OH-→C6HNH2+H2O(3分)(3)①防止水蒸气冷凝，影响蒸馏效果(2分)②乙醚是易燃易挥发物质，防止爆炸；c(各2分)③184℃(2分)④43.9%(3分)13.(1...

(6)7;BC(每空2分)14.(1)O>C>C(或OC1、C)(2)6;p;5s25p(3)平面三角形；S0(或其他答案)(每空2分)15.(1)1s22s22p3s23p3{或[Ne]3s23p3}(2)①<②sp③<；硫原子的最外层电...

卷行天下·化学参考答案月考卷一化学反应的热效应1.D解析：硅太阳能电池将太阳能转化为电能，A项错误；锂离子电池能实现化学能与电能的相互转化，B项错误；太阳能...

A.研制水溶剂涂料替代有机溶剂涂料B.推广使用可降解塑料可减少白色污染C.用反应Cu+2HS0,(浓)一△-CuS0+S02↑+2H0榈备硫酸铜0D.用反应2CH2=CH,+02A82H,C人C,制备环...

C能把育己的身体扭曲，就为了穿衣服，但是可以穿不同的衣服山可以寧不同的衣服，但是不能把自已的身体钮曲，就为了穿衣服8林冰镇入文申横线上的词语，金都恰当的...

()高三总复习滚动周测卷·语文（二十）2.下列对原文论证的相关分析，不正确的一项是(3分)A.文章采用分总式的论证结构，先从三个方面分别阐述，然后归纳自己的论点...

听第8段材料，回答第10至12题10.Where did the woman first meet John and Eric?A.At a Pizzn Hut.B.At a swimming club.C.In Jade Mountain.11.Who comes from...

17.答案示例：①无可奈何（无计可施、束手无策、无力回天、劳而无功）②一劳永逸（一蹴而就）③微不足道（不值一提、不足挂齿、无足轻重）【评分说明】本题3分，答...

“这大米老百姓如何买得起，简直是粒粒珠玑，享用的只是富豪阔佬，唉。”一直聊到鸡叫三遍，杨三才恋恋不舍揖别回房。第二天出发时，沙风里也雇了一匹马和一个马夫...

素养突破训练答案精解精析词客，看到了好诗文，“偶逢”可见诗人门庭冷落，体现出诗人的孤碧霄去搏击凡鸟；“毛血”句把“凡鸟”喻为误国的庸人，含锄恶之独寂寞。意。...

(二)参考立意①“三百六十行，行行出状元”，职业理想应该多元化，尊重孩子自己的选择。②教育应力避急功近利，摆脱世俗的奴役。③关注学生兴趣，树立人生理想，引导...

书面表达One possible version:As the saying goes,"Reading is rewarding."When itcomes to reading,literary classics are one of the best choices.It's true...

卷行天下·英语参苦答案周测卷一单句填空1.for 2.nationality 3.frightened 4.to hear 5.designer 6.confidence 7.lecturing 8.annoyed9.an 10.impression短语填...

2022梅州市高三一模参考答案第二部分阅读理解21-23 DDC 24-27C B BC 28-31 CAAC 32-35 BCDD36-40 DACEF第三部分第一节完形填空41-45 BADCA 46-50 BCADB 51-55 CD...

第16期练练吧”参考答案5.mix:together6.take a tripnext weekend?2.to hear圆汇专练句型专练IL3.showing4.001.some by singing5.butter1.dug2.available1.How mu...

【耳素耳】Keys:(One possible version)1.I was shorter than other kids of my age2.But it didn't go smoothly at first3.I gradually became crazy about thi...

1-year-old daughter,Karington,told me her support for a classmate with41 need.This42 actionpHerstorysarted with,"Mommy,I made a teacherry today.Ididn'...

Encouraging your high school students to do their best isn't as hard asyou may think.It should become part of a daily routine that both you and yourte...

第35期B1版Keys:(One possibleversion客观题除外)阅读训练营1-4 BADA5-7 CADng非常解读1-5 ACDEB完形小测ng1.because2.to getge3.returned4.mealsle5.understood...

秘密★启用前自贡市普高2023届第三次诊断性考试英语试题卷本试卷共150分，考试时间为120分钟。答卷前，考生务必将自己的姓名、准考证号填写在答题卡上，并在规定...

W:Listen,if the worst comes to the worst,we'll just have to M:Well,we circle round and round the ships and get in theset up a camp in those woods.way...

at work,butUnits3-5,(选择性必修)Book 4ethere a problemMarksoblem.(3)■试顺命制，（学英语）报社试题测评细第一部分听力（共两节，满分30分）ng to work late...

ronment,inspired by the talented young people I was helping to 59 their careers.Now,I realize that there are jobs that will keep you happy, 60 and ins...

第二节（共15小题；每小题1.5分，满分22.5分） 听下面5段对话或独白。每段对话或独白后有几个小题，从题 中所给的A、B、C三个选项中选出最佳选项，并标在试卷的...