版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
1、电大无机及分析化学期末考试试题及答案一、判断题 (每小题1分 共10分 ) 1键和键在分子中均可单独存在。 ( )2系统误差是不可测的。 ( )3极性分子间仅存在取向力,非极性分子间只存在色散力。 ( )4等价轨道处于全充满、全空、半充满状态时原子能量较低。 ( )5施肥过多造成的“烧苗”现象,是由于植物细胞液的渗透压小于土壤溶液的渗透压引起的。 ( )6醋酸溶液经稀释后其解离度增大,因而可使其H+ 浓度增大。 ( )7BF3和NH3都具有平面三角形的空间结构。 ( )8CO2与CH4的偶极矩均为零。 ( )9共价键和氢键均有饱和性与方向性。 ( )10在消除了系统误差之后,测定结果的精密度越
2、高,准确度也越高。 ( )选择题 ( 每小题2分,共30分 )1质量摩尔浓度的单位是( )。 A. mol·L-1 B. mol·kg-1 C. g·L-1 D. mg·g-12已知反应H2(g)S(s)H2S(g)和S(s)O2(g) SO2(g)的平衡常数为Ky1和Ky2,则反应: H2(g)SO2(g)H2S(g)O2(g)的平衡常数为( )。 A. Ky1Ky2 B. Ky1/Ky2 C. Ky1×Ky2 &
3、#160; D. Ky1-Ky2 3下列量子数取值错误的是( )。 A. 3,2,2,+y B. 2,2,0,-y C. 3,2,1,+y D. 4,1,0,-y4主量子数n=3的电子层可容纳的轨道数和电子数为( )。A. 3和6 B. 3和9 C. 6和12 D. 9和18 5下列卤化氢分子极性由大到小的顺序正确的是( )。A. HCl>HBr> HI >HF
4、 B. HI>HBr>HCl>HFC. HF> HI> HBr> HCl D. HF> HCl> HBr> HI6Fe3O4中铁的氧化数是( )。 A. 2 B. -2 C. 8/3 D. 37下列关于分子间力的说法正确的是( )。A. 分子型物质的沸点总是随相对分子质量的增大而增加 B. 色散力存在于所有分子间C. 极性分子间仅存在取向力 D. 大多数含氢化合物中都存在氢键8能组成缓冲溶液的是( )。A. HAc-NaA
5、c B. NaCl-HCl C. NaOH-NaCl D. HCl-H2O 9定量分析工作要求测定结果的误差( )。A. 在允许误差范围之内 B. 等于零 C. 略大于允许误差 D. 没有要求 10下列各式中,有效数字位数正确的是( )。A. 0.0978(4位) B. pH=3.24 (3位) C. pKa=1.80 (2位) D. 0.420(2位)11随机误差可通过( )方法减免。A. 对照试验 B. 校正仪器 C. 空白试验 D. 适当增加平行测定次数12在Cu(NH3)42+配离子中,中心离子的配位数为( )。A. 3 B. 4 C. 5 D. 613在NH4+ + OH- NH3&
6、#160; + H2O体系中,属于质子酸的物质是( )。A. NH3与H3O+ B. OH-与NH4+C. NH4+与H2O D. OH-与NH314从锰在酸性溶液中的元素电势图可以看出,在酸性介质中会发生歧化反应的物质是( )。A. MnO4- B. MnO42- C. MnO2 D. Mn2+15EDTA准确直接滴定单一金属离子M的条件是( )。A. lgKfy8 B. lgcM·Kfy6C. lgcM+lgKfy6 D. lgcM+lgKfy6 三、填空题 ( 共 25分 )1命名Cr(NH3)4Cl2NO
7、3为 ,中心离子为 ,配位原子为 ,配位数为 ,配体包括 。2在含有AgCl(s mol·L-1 的 AgNO3 , AgCl的溶解度将_,这是由于_的结果。3NH3分子中N的杂化方式为 杂化,空间构型为 。BCl3分子中B的杂化方式为 杂化,空间构型为 。4原电池中,发生还原反应的电极为_极,发生氧化反应的电极为_极。5常用于标定HCl溶液的基准物质有 、 常用于标定NaOH溶液的基准物质有 、 。 624号元素的核外电子排布为 它位于元素周期表第 周期 族 区。7核外电子排布的三规则是 、 、 。四、计算题 (共 35分 )1(6分)取萘溶于100g苯中,测得该溶液的凝固点降低,
8、求萘的摩尔质量(苯的凝固点下降常数为Kf 5.12 K·kg·mol-1)。2(6分)测定某蛋白质质量分数七次,数据为:79.58,79.45,79.47,79.50,79.62, 79.38, 79.80。求平均值、平均偏差、相对平均偏差、标准偏差、相对标准偏差、极差。3有一含有Na2CO3和NaOH的混合物,称取试样0.5895 g溶于水,用0.3000 mol·L-1 HCl标准溶液滴定至酚酞变色,消耗HCl 24.08mL,加入甲基橙,继续用上述HCl标准溶液滴定,又消耗HCl 12.02mL,计算试样中Na2CO3和NaOH的质量分数。M(Na2CO3)
9、=·mol-1,M(NaOH)= g·mol-1。(8分)4,需要在1L mol·L-1L的NH3·H2O中加入多少克NH4Cl(设体积不变)。(NH3)=1.8×10-5,M(NH4Cl) = g·mol-1(8分)5y(Ag+ V, 向电极中加入KBr 使AgBr 沉淀达到溶解平衡时,且c(Br-)=1.0 mol·L-1,求(Ag+/Ag) 已知 Kspy (AgBr) = 7.7×10-13)。(7分)习题答案一、判断题1×;2×;3× ;4 ;5× ; 6×
10、; ;7× ;8;9;10二、选择题1B;2B;3B;4D;5D;6C;7B;8A;9A 10C ;11D ;12B;13C;14B;15C 三、填空题 1硝酸二氯四氨合铬(III); Cr3+; N, Cl; 6; NH3, Cl-2减小; 同离子效应3sp3不等性; 三角锥形; sp2; 平面三角形4正; 负5Na2CO3; Na2B4O7·10H2O; H2C2O4·2H2O; KHC8H4O4624Cr:1s22s22p63s23p63d54s1; 4; VIB; d区 7泡利不相容原理; 能量最低原理; 洪特规则四、计算题1解: 苯的凝固点降低常数为Kf
11、 5.12 K·kg·mol11.07K 5.12 K·kg·mol-1× M127.8 g·mol-1解:平均值(79.58+ 79.45+79.47+79.50 +79.62+79.38+79.80)÷7 79.54%平均偏差0.11%相对平均偏差0.14%标准偏差0.14%相对标准偏差0.18%极差79.8079.380.42解:=24.55%=%4解:根据pH=lg所以9.5= =14 =14 4.74 故x=(7分)5解: Ag+ + e- Ag jy (Ag+/Ag) Ag+ + Br- AgBr Ksp = 7
12、.7×10-13 c (Ag+) = Ksp/c (Br-) = 7.7×10-13 g·mol-1j(Ag+/Ag) = jy (Ag+/Ag2lgc (Ag+) = 0.799 V23V 西北农林科技大学本科课程考试试题一、单项选择题(每小题1.5分,共30分) 得分: 分1有三种非电解质的稀溶液(都为水溶液),它们的沸点顺序为C>B>A,则它们的蒸气压曲线为( )。A B C D2CaO(s)+H2O(l)9 Ca(OH)2(s),在25ºC及标准状态下反应自发进行,高温时其逆反应为自发,这表明该反应为( )类型。 A. rHym &g
13、t; 0, rSym <0 B. rHym <0, rSym >0 C. rHym > 0, rSym >0 D. rHym <0, rSym <03在1073K下,反应2NO(g)+2H2(g)=N2(g)+2H2O(g)的反应速率如下表。 序号c(NO)/ (mol·L-1)c(H2)/( mol·L-1)v/(mol ·L-1 ·S-1)12.00×10-36.00×10-31.92×10-321.00×10-36.00×10-30.48×10-3
14、32.00×10-33.00×10-30.96×10-3该反应的速率方程为( )。A. v=kc(NO)c(H2) B. v=kc2(NO)c2(H2) C. v=kc(NO)c2(H2) D. v=kc2(NO)c(H2) 4下列反应的标准摩尔焓等于其产物的标准摩尔生成焓的是( )。A. SO2(g)yO2(g)9SO3(g) B. yN2(g)yO2(g)9NO(g)C. 2H2(g)O2(g)92H2O(g) D. CO(g)yO2(g)9CO2(g)5反应2A2B93C,对A是一级反应,对B是二级反应,其反应速率常数k的单位为( )。A. s-1 B. m
15、ol·L-1·s-1 C. L·mol-1·s-1 D. L2·mol-2·s-16反应2H2O2(g) 92H2O(g)+O2(g) rHym =-211.46 kJ·mol-1,对其逆反应来说,下列说法正确的是( )。A. Ky与温度无关 B. Ky随温度升高而增大C. Ky随温度升高而减小 D. 增加p(H2O2), Ky增大7几个数字乘除运算,计算结果有效数字的位数取决于( )。A.相对误差最大的 B. 相对误差最小的C.绝对误差最大的 D. 绝对误差最小的8若用双指示剂法测定NaOH和Na2CO3组成的混合碱,则达
16、两等量点时,所需HCl标准溶液的体积有如下关系( )。A.V1V2 B.V1V2 C9用四个量子数n、 l、 m、 ms表示某一电子的运动状态,不合理的是( )。A. 3,2,-2,+y B. 3,1,1,+y C. 3,2,1,-y D. 3,0,1,-y10表示Fe3+的价电子层结构,正确的是( )。A. 3d64s2 B. 3d54s0 C. 3d34s2 D. 3d44s111离子键不具有饱和性,但离子能结合的相反电荷的离子的数量有限,原因是( )。A离子外空间有限B. 离子电荷的数量有限C. 离子结合的相反电荷的离子数量有限D. 离子键的稳定性有限12Fe(OH)3沉淀在下列介质中溶
17、解度最大( )。A. 纯水 B. 0.10 mol·L-1NH3·H2OC. 0.10 mol·L-1HAc D. 0.10 mol·L-1FeCl3 13下列电对中,标准电极电位最大的是( )。A. AgBr/Ag B. Ag2CrO4/Ag C. Ag(NH3)2+/Ag D. Ag+/Ag 14某有色溶液,当浓度减小时,溶液的最大吸收波长和吸光度分别( )。A. 向长波方向移动,不变 B. 不变,变小C. 不变,最大 D. 向短波方向移动,不变15下列分子中,偶极矩为零的是( )。A. NF3 B. CHCl3 C. SiH4 D. OF216下列
18、物质不可以作为基准物质的是( )。 A. 硼砂 B. 邻苯二甲酸氢钾 C. 氢氧化钠 D. 碳酸钠17强酸滴定弱碱,以下指示剂不能使用的是( )。A. 甲基橙 B. 酚酞 C. 甲基红 D. 溴甲酚绿18下列配离子在强酸介质中,肯定能稳定存在的为( )。A. AgCl2- B. AlF63- C. Mn(NH3)62+ D. Fe(C2O4)33-19下列物质中的中心离子属于sp3d2杂化的是( )。A. Cu(CN)42- B. FeF63- C. Cu(NH3)42+ D. Fe(CN)63-20已知溴在酸性介质中的电极电位图为 则下列说法不正确的是( )。A. 酸性介质中,溴元素中间价态
19、的物质均易歧化B. 酸性介质中,HBrO能发生歧化C. 酸性介质中,BrO4-能将Br-氧化成为BrO3-D. 酸性介质中,溴的含氧酸根都具有较强的氧化性二、填空题(每空1分,共30分) 得分: 分1HF、HCl、HBr三物质,分子间取向力按 顺序递增;色散力 按 顺序递增;沸点按 顺序递增。2BaSO4(Kysp1.08×10-10)、AgCl(Kysp1.77×10-10)、CaF2(Kysp×10-11)溶解度从大到小的顺序是 。3配合物CoCl(SCN)(en)2Cl的名称是 ,中心离子是 ,中心离子的配位数是 ,配体数是 ,配体是 。4 mol·
20、;L-1 ) + 5Fe3+ (0.1mol·L-1) + 4H2O的电池符号是: 。5朗伯比尔定律中,吸光度A与溶液浓度c及液层厚度b的关系为 ,透光率T为50的溶液,其A ,为了使测量的误差比较小,吸光度的读数应该控制在 范围内。6把0.020 mol·L-1 的Na2SO4溶液10 mL与0.0050 mol·L-1 的BaCl2溶液90 mL混合制得BaSO4溶胶,电泳时胶粒向_极移动,其胶团结构式为 。AlCl3、MgSO4、K3Fe(CN)6三种电解质对该溶胶的聚沉能力由小到大为 。7乙炔分子中,碳原子的杂化类型是_,分子中键有_个,键_个。8以下几种
21、情况反应速率加快的主要原因是:增加反应物浓度 ;升高温度 ;加催化剂 。9NaH2PO4水溶液的质子条件式为 。10浓度为0.1 mol·L-1某一元弱酸能被准确滴定的条件是 。1129号元素其基态原子核外电子排布式为 ,是第 周期、第 族、 区元素。12pH=2.0的HAc溶液用等体积水稀释后,其pH值会变为_ _。13已知y(Fe3+/ Fe2+)0.68V,y(Ce4+/ Ce3+)1.44V。以Ce4+滴定Fe2+至终点时的电位为 V。三、判断题(正确的填“”;错误的填“×”。每小题1分,共10分) 得分: 分1渗透压不同的两种溶液用半透膜相隔时,渗透压大的溶液将迫
22、使渗透压小的溶液液面有所上升。 ( )2y大小反应物质的得失电子的能力,与电极反应的写法有关。 ( )325下,元素稳定单质的fHym =0,Sym =0, fGym =0。 ( )4在消除系统误差的前提下,增加实验次数可消除随机误差。 ( )5在薛定谔方程中,波函数描述的是原子轨道;2描述的是电子在原子核外某处出现的概率密度。 ( )6用酸效应曲线可选择酸碱滴定的指示剂。 ( )7用部分风化的H2C2O4·2H2O作基准物质标定NaOH,结果偏高。 ( )8活化能高的反应,其反应速率很低,且达到平衡时其Ky值也一定很小。( )9难溶电解质的不饱和溶液中不存在沉淀溶解平衡 。 ( )
23、10强酸滴定弱碱,突跃范围与弱碱的解离常数和起始浓度有关。 ( )四、计算题(第1题9分,第24题各7分,要求计算步骤清晰,代入数据的过程不能省略,有效数字位数正确。) 得分: 分已知CO2(g)和Fe2O3(s)在298.15K下时,fHym (CO2, g)=-393.51kJ·mol-1,fHym (CO2, g)=-394.38kJ·mol-1, fHym (Fe2O3, s)=-822.2kJ·mol-1, fHym (Fe2O3, s)=-741.0kJ·mol-1则反应Fe2O3(s) + C(s)=2Fe(s) + CO2(g)在什么温度
24、下能自发进行?2蛋白质试样g,采用适当的方法将其中的N处理成NH4+,然后加入浓碱蒸馏,用过量的硼酸溶液吸收溶液蒸出的NH3,再用0.1200mol·L-1L滴定至终点,计算试样中N的质量分数(MN=·mol-1).将等体积的浓度均为0.002 mol·L-1的KCl和KI混合,逐滴加入AgNO3溶液(设体积不变),问Cl-和I-沉淀顺序如何?能否用分步沉淀方法将两者分离?Kysp(AgCl)=1.77×10-10,Kysp(AgI)2×10-17 已知y(Fe3+/ Fe2+, y(Cu2+/ ,计算当c(Fe2+)= c(Cu2+) = m
25、ol·L-1, Fe3+的浓度至少大于多少时下列反应才能进行: 2 Fe3+ + Cu 9 2 Fe2+ + Cu2+ 参考答案:一、单项选择题(每小题1.5分,共30分)1.C 2.D 3.D 4.B 5.D 6.B 7.A 8.A 9.D 10.B11.A 12.C 13.D 14.D 15.C 16.C 17.B 18.A 19.B二、填空题(每空1分,共30分) 1. HBr<HCl<HF;HF <HCl< HBr;HCl < HBr <HF2. s(CaF2)> s (AgCl)> s (BaSO4)3. (一)氯化一氯
26、83;一硫氰根·二乙二胺合钴(III); Co3+;6;4;Cl-、SCN-、en4.(-)Pt| Fe2+(0.1 mol·L-1), Fe3+(0.1 mol·L-1)| MnO4-(0.1 mol·L-1), H+(1.0 mol·L-1), Mn2+(0.1 mol·L-1)| Pt(+) 5. A=bc;6. 负;(BaSO4)m·nBa2+·2(n-x)Cl-2x+·2xCl-或(BaSO4)m·nBa2+·(2n-x)Cl-x+·xCl-, AlCl3<M
27、gSO4<K3Fe(CN)67. sp等性杂化;3;28. 单位体积内活化分子的总数增加;活化分子百分数增加;改变反应途径,降低反应活化能。9. c(H+)+c(H3PO4)=c(HPO42-)+2c(PO43-)+c(OH-)10. Kya10-7 11. 1s22s22p63s23p63d104s1;四;IB;ds12. 变大(若计算为)三、判断题(每空1分,共10分)1.× 2. × 3. × 4. × 5. 6. × 7. × 8. × 9. 10. 四.计算题(第1题9分,第2-4题各7分)1. 解: =3(
28、CO2, g)- 2(Fe2O3, s) =3×(-393.51)- 2×(-822.2)=(kJ·mol-1) =3(CO2, g)- 2(Fe2O3, s) =3×(-394.38)- 2×(-741.0)=(kJ·mol-1) =-T=0.5534(kJ·mol-1·K-1) T >=838.2(K)2解:3解:生成AgCl, AgI沉淀时所需Ag+的浓度分别为 所以加入Ag+后,首先析出AgI沉淀。当AgCl沉淀生成时,溶液中残留的I-浓度为所以,当AgCl开始沉淀时,I-已经沉淀完全,利用分步沉淀可
29、以将二者分离。4. 解: 当=>0时反应能进行,所以 =+即 0.77+0.0591 lg c(Fe3+得lg c(Fe3+)>-7.28 c(Fe3+)> 5.25×10-8mol·L-1请您务必删除一下内容,O(_)O万分谢谢!2015年中央电大期末复习考试小抄大全,电大期末考试必备小抄,电大考试必过小抄Indonesia has emerged as a top vacation destination for Chinese this summer, along with Thailand's Phuket island and the M
30、aldives archipelago. Encouraged by growth in Chinese travelers to Indonesia, the government in Jakarta has recently relaxed its visa policy. Since June 10, Chinese tourists can enter Indonesia through nine appointed locations, including the Soekarno Hatta International Airport in Jakarta, the Ngurah
31、 Rai International Airport in Bali and the Kuala Namu International Airport in Medan, by just getting their passports stamped on arrival. Officially, it is called the "free-visa" scheme. The new policy also means Chinese tourists can save $35 on visa fees, which will likely make trips to I
32、ndonesia more alluring. While such an arrangement allows Chinese visitors to stay up to 30 days for the purpose of traveling, those seeking extensions will need to get paid visas from that country's missions inBeijing, Shanghai, Guangzhou or Hong Kong, according to an officia
33、l at the Indonesia embassy in Beijing. Santo Darmosumarto, head of the embassy's information, social and cultural section, says the new policy is aimed at strengthening people-to-people contacts between the two countries. Dai Yu, marketing director of Ctrip, a major Chinese online travel agency,
34、 says: "We've seen a nearly 50 percent growth over the previous month in the number of Chinese tourists to Bali since the policy was announced." During his trip to China in March, Indonesian President Joko Widodo proposed that his country and China aim to increase two-way visits to a m
35、aximum of 10 million people in the next few years. The Indonesian government has set their sights on greeting 2 million Chinese tourists by the end of this year, according to the official. "The Indonesian government hopes that Indonesian nationals would also be given preferential treatment whil
36、e visiting China," says Darmosumarto. In 2013, the number of Chinese tourists who visited Indonesia stood around 807,000. Last year, it increased to 959,000, he adds. Bali remains the most popular site among Chinese tourists. In February, more than 92,200 Chinese tourists made trips to Bali, ra
37、nking first among overseas visitors, the Bali Times reported. Last year, the island witnessed more than 586,000 arrivals from China, an increase of 51 percent over 2013. "Bali isn't just for sightseeing, but also for weddings, honeymoons, golf and many outdoor activities," says Fan Wen
38、qing, a marketing executive at Garuda, Indonesia's national airliner. Garuda offers three nonstop flights between Beijing and Bali, and four each week between Beijing and Jakarta. There are daily flights from Guangzhou, in Guangdong province, and Shanghai to Jakarta as well. It takes f
39、rom six to eight hours on a nonstop flight to reach Indonesia from China. Indonesia is home to more than 17,000 islands. Tourists can tour Yogyakarta to see Prambanam and Borobudur, two historical and religious sites, and explore the local handicraft markets. The base of a volcano, Bandung, which is
40、 also known as the "Paris of Java", is ideal for adventure-seekers. Many ecotourism destinations, such as Toba Lake in Sumatra, Tanjung Puting National Park in Kalimantan and Bunaken in Manado, are places the embassy official recommends for tourists. Indonesia boasts world-class surfing fa
41、cilities along the shores of Sumatra down to Nusa Tenggara Islands. Recently, Lombok, a sister island east of Bali has gotten so much attention from Chinese travelers that some travel agencies are offering twin packages for Bali and Lombok. The best time to visit Bali is from May to October, when it
42、 doesn't rain much and the weather is cool. At press time, a weeklong package from Shanghai or Guangzhou to Bali was a little more than 3,000 yuan ($480) on Ctrip's website. Chinese tourists have taken a shine to rafting in Ubud, sightseeing in Tanah Lot, and surfing and diving in
43、Nusa Lembongan, says Dai. Civet coffee, essential oil and woodcarvings are among the most popular products for Chinese tourists in Indonesia, she says. Indonesian food is also something that visitors shouldn't miss. Local cuisines feature many spices, including peppers and cloves, and coconut pu
44、lp. Fried rice, "dirty duck" and roast suckling pig are recommended. Children's illustration books first appeared in the 1600s in Europe. Their passage to China, however, took much longer, roughly 300 years. In China, children's illustration books have a history of just 100 years a
45、nd their development can be divided into four stages. From early 1900s to mid 1900s, a large number of books and magazines with illustrations appeared with the fast development of the modern publishing industry. The illustration arts at that time were a mixed genre of Chinese traditional p
46、aintings and the western style, and most of the stories originate from the fundamental changes that China experienced after the collapse of Qing Dynasty (1644-1911), the warlord struggles and the war against the Japanese invasion. The second stage was from mid 1900s to late 1970s, when the &quo
47、t;cultural revolution" (1966-76) ended. The fast development of some special publishing houses for children gave birth to a large number of illustration-story books, which made a good use of folk art techniques, such as wood board carving, frescoes, and ink and wash painting, etc. Many of the p
48、opular stories are from Chinese history and wars after 1900s. The third stage is from early 1980s to late 1990s, a golden period for the development of children's illustration books. The reform and opening-up brought in new concepts and ideas from the West to China, a country that had been close
49、d to the West for nearly three decades. Fast development of economy, society and culture provided the writers and painters with a lot of inspiration to create new literature works and draw illustrations. China also imported large amounts of children's illustration books from the West and Japan.
50、Many young parents in China have a strong nostalgia about children's illustration books they read in the 1980s and 1990s. This is also the last era in China's artistic innovation before the advent of the Internet period. The fourth stage is featured with the spread of the Internet and the ot
51、her computerized means of art innovation. The hand-drawn children's illustration books are gradually replaced by cartoons drawn and copied by software and machines, and shown on tablets, computers, television and smart phones, instead of books. Hainan Tropical Wildlife Park and Botanical Garden is nature's haven, with no less than 4,000 rare birds and animal
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 企业人力资源工作计划
- 活动计划范文9篇
- 安全在我心中的主题演讲稿(6篇)
- 景观石头采购合同3篇
- 科学教学工作计划范文汇编7篇
- 2022小学生食品安全演讲稿【8篇】
- 服装qc工作总结
- 车间的工作计划
- 2024年度绿色生态牛养殖与买卖合同协议3篇
- 福建省福州市延安中学2024-2025学年高二上学期12月月考语文试题
- 五年级数学上册试题 -《统计表和条形统计图》习题2-苏教版(含答案)
- 粤教粤科版小学科学四年级上册课时同步练习试题及答案(全册)
- 华为物联网业务布局研究报告
- 医院建筑使用过程中的装饰装修改造设计分析
- 餐饮仓库管理的规章制度(优秀五篇)
- (完整word版)石材铝板幕墙设计说明
- 食品安全法培训课件
- 钳夹实验汇总
- 酒精安全周知卡
- 江苏省电力公司“三集五大”体系机构设置和人员配置方案
- 低血糖的预防及处理(课堂PPT)
评论
0/150
提交评论