2020-2021学年九年级下册化学人教版单元测试AB卷 第十一单元 盐 化肥 B卷 能力提升
※题型：单选题※知识点：单选题※试题难度：中等<br>古典著作蕴含着许多化学知识,晋代莫洪的《食肉方》(去除黑痣的药方,“食”通“蚀”)中记载:“取白炭灰(熟石灰)、荻灰(草木灰)等分煎合,可去除黑痣”。煎合后药剂中起到“食肉”作用的主要物质是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/899E87B27F1236109AC87103F2D31DB2.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/2AF4B38ED3DA4A0676087C3FEA1A2926.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/0125C0E265985712A3A9CAA2643B9043.png"><br>D.KOH<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/f90231618c0947c6abdc409db9cc1816/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/e84c99f08c054802939feea384291548/26A1BD5959903DA385003BA80095531A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列关于化肥、农药的说法中,正确的是( )。A.尿素<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/21/A20F41369BE87CC7816EE25A9FE75269.png"><br>是一种常用的复合肥料<br>B.为增强肥效,应将硫酸铵与熟石灰混合施用<br>C.农药施用后,会通过农作物、农产品等发生转移<br>D.通过闻气味的方法,不能将氯化铵和碳酸氢铵区别开来<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/41c18bbd61064cdc9ef840c439b46fc4/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/ba8d81b03ae14151bb45d8dca2f92dc4/54BAA703416795DA853E087D7CA6A29B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列选项中物质的俗名、化学式、类别、用途完全对应的是( )<br>A.纯碱、Na<sub>2</sub>CO<sub>3</sub>、碱、制玻璃<br>B.生石灰、CaO、氧化物、补钙剂<br>C.食盐、NaCl、盐、除铁锈<br>D.石灰石、CaCO<sub>3</sub>、盐、做建筑材料<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/d7e1331f139a4afaaad6dc50ce850c80/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>某同学绘制了可以通过一步反应制取<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/9088F9111F1A003D21C1331598B3FA03.png"><br>的思维导图。其中所选用的物质错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/DA8A5F93F85216E40CA2E12892BE60E1.png"><br>A.①—Mg<br>B.②—<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/410694FB5B13F2A4E3A469530E1EBAF8.png"><br>C.③—<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/5B8A0DA17C2201985CAAC04144C22122.png"><br>D.④—<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/860E0DE1FD8107FBFA0AFA7E46C0BFDB.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/e7086a50e7e0404da47cd242b7a0efea/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/b9693860127a4d729b01c9849e2be4e1/2F6C1146B6358379E18893B9D6E70B45.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>某化学兴趣小组同学按如图8-4-1中操作完成粗盐(含有难溶性杂质)提纯实验。下列说法正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/8/50214A2AF8A49F26DC8DF0F808B47E7F.png"><br>A.去除难溶性杂质的步骤是③<br>B.④操作中待溶剂全部蒸干后再停止加热<br>C.正确的操作顺序为①⑤②③⑥④<br>D.所得精盐潮湿会使产率偏低<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/6259012270a942fab544ba9869a4e5db/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/a37bec92dcb94b758d852797f2cd2876/A20E7A96C22C2BAADB3E07D343BCF785.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>除去下列物质中的少量杂质,所选用试剂及实验操作均正确的是( )<br><tbody><br>选项<br>物质(括号内为杂质)<br>所用试剂及必要实验操作<br> A<br> 氯化钠(氯化镁)<br> 加水溶解、过滤,蒸发<br> B<br> 硝酸钠溶液(硫酸钠)<br>加入适量氯化钡溶液,过滤<br> C<br> 氯化钙溶液(盐酸)<br> 加入过量的碳酸钙,过滤<br> D<br> 氧气(氮气)<br> 缓慢通过灼热的铜网<br></tbody><br>A.A B.B C.C D.D<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/743d8f50622f47e598ec9a794ddccbcb/9284769935E34A8041F3A9B6AFC465F5.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/e5d3e27e69c943d2a8c15b5e3e4d469f/7F969B526CEBE49D3D31C180C321DE55.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>分离提纯物质,除去杂质是化学实验操作必备的技能之一。除去下列物质中杂质,其化学反应原理或操作不正确的是( )<br><tbody><br>选项<br>物质(括号内是杂质)<br>除杂质试剂<br>化学反应原理<br>操作或方法<br>A<br>Cu(Fe)<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/5B8A0DA17C2201985CAAC04144C22122.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/B48FC27BCDF265F039C9097DBD2C7290.png"><br>过滤<br>B<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/7E9D002E9582A0EC92B8D59D9C5E0910.png"><br>HCI<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/AC587515EE84CA9852FB6E84B2912945.png"><br>蒸发<br>C<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/A0CC762E03D7C72B6331947AC0652106.png"><br>NaOH<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/99487A5E70FB28EB603845C8FD9CA076.png"><br>通入<br>D<br><img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/3F940BCC97477C9EE99017BF7551273A.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/79439DE1DA1D931FB78C54E47331413B.png"><br><img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/5A8EF7D4904473981425FEA51E0FC6F0.png"><br>过滤<br></tbody><br>A.A B.B C.C D.D<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2019/f64177ae74ae47c3b53ecadfd422b738/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2019/0295c853200a4219818c472e84256e32/54D8D9C63F2C19448DF077FC4738DC1E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列各组固体物质,不能用水鉴别的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/2D4C14A871F1745D6B488AFB0A3EB997.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/7B7ADC7A591E084AFC910062688FCEB5.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/A634D5461C8558E58540CA0DEF76EC7A.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/5635BA0D1F40F7DDEB6E59C5942A5DA4.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/d9bb285521f84261816edfacbcacb3ca/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/a2944f164d39481fb91e9eaa88ccd1ba/842F6CA72F4CF75B754270D121F83730.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是某同学鉴别<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/19/086A02318469A9AEF790B097383F64E3.png"><br>三种化肥的过程,其中试剂甲和乙分别可能是( )。<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/19/6EA5A6CD7E9A7F3662941D96DC4AC369.png"><br>A.甲:熟石灰;乙:稀盐酸<br>B.甲:水;乙:氢氧化钠溶液<br>C.甲:氢氧化钠溶液;乙:水<br>D.甲:稀盐酸;乙:氯化钠溶液<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/e35eb2e74fc34aedb7536546243b4a46/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/b5ca35b466ba4197b0e0c27acdfe27d2/BCD4FFFF02614E718AE45B71E8001DE0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>甲、乙两个排污口共排放了<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/430184C2BDF427650739BA9CCB73F672.png"><br>四种物质,每个排污口各排放其中的两种不同物质。下列关于污水成分的分析合理的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/CA8AEC00C05BFBDF73D4DFCF5A93703F.png"><br>—定来自同一排污口<br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/5B06E630D68582A962C0E32FC06CBD96.png"><br>—定来自同一排污口<br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/0F3F0D17DD385753BC339AFE30008963.png"><br>—定来自同一排污口<br>D.将两处污水混合后,溶液一定呈中性<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/8a97f45bd3a449d4aaf983f63cc0164a/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/fa6b7c3c2f314e53bee7968e2d04376d/FC028A20C4176EECFF2A978208D95B5D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>河道两旁有甲、乙两厂,它们排放的工业废水中共含<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/19/AE29153A85479BD5478621975620ECF2.png"><br>六种离子。两厂废水中各含三种离子,其中甲厂的废水明显呈酸性,则甲厂废水中的离子是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/19/A60EECEC63F1554CC5CD15B9A4A81443.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/19/7691F58D61F51F95E36C77792082109D.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/19/180B07E830B43A98570C2B7E4B303B92.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/11/19/1F130D26A93A30C540F74D4989E32463.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/ca62804533844ee8b31fb7bd695f45ce/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>一定温度下,向不饱和的硫酸铜溶液中加入足量的下列固体,其对应关系正确的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/1ECD849A52AD73C72A6CA4E5E95BB016.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/D4B4B9467E293616B4480F66F949495A.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/02A2811EEAD1082C6B7CF76932194CB1.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/B6DA855C72A1C38FF0DEF2A5B15227F5.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/483dafaf91ca4e9bae9bc13f5ba3f688/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/651b85ea017242c3a1d3e6ab59852fb6/8B050DE1974E7659656D2D3DC9AEBB58.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>现有盐酸和氯化铜的混合溶液,向其中逐滴滴入氢氧化钠溶液,生成沉淀质量与滴入氢氧化钠溶液质量的变化关系如图所示。以下说法正确的是( )。<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/57353DF56DAA305C1A4C2D0D787F7969.png"><br>①滴加氢氧化钠溶液的质量至<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/F7DCF5B1DD20C0FBCE39A02B32B5B943.png"><br>时,溶液中含有两种溶质②滴加氢氧化钠溶液的质量为<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/49302C54A71D822D65307D1BBB6E3817.png"><br>,此时溶液中发生的化学反应为<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/A9EFEEA04282CD4FA0FFF36B3EAAA78E.png"><br>③滴加氢氧化钠溶液的质量至<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/9EA42BECFF53312045635818FDEDEA76.png"><br>时,溶液pH>7④在滴加氢氧化钠溶液的整个过程中,溶液中氯元素的质量先减小后不变A.②③ B.①②③ C.③④ D.②③④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/4dc93ad44b8744d78b5d07fb9492331f/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/6d4afeeabcd3417dad9b9cf2d0049fd7/F0F76985DE84F0A468EC551375137E8F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>向一定质量<img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/CB7E7C4BEEFBEBF27159F2B985D9C3A2.png"><br>和HCl的混合溶液中逐滴加入溶质质量分数为10.6%的<img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/5020518739833AA0F61A620DBB447C84.png"><br>溶液,实验过程中加入<img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/5020518739833AA0F61A620DBB447C84.png"><br>溶液的质量与产生沉淀或气体的质量关系如图所示,下列说法错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/12/9/040CEE7772703322637BA0306A16CF5E.png"><br>A.<br>P<br>点时的溶液中只含一种溶质<br>B.<br>R<br>点对应横坐标的数值为180<br>C.<br>O<br>至<br>P<br>过程中溶液的pH变大<br>D.<br>Q<br>至<br>R<br>段表示生成沉淀的过程<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2019/adf9a6ed0d2e4158813dbb4a63199944/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2019/4be83e5138be45e1b7da2f49c6666099/A78F2A668145ABC663BE4357F49B9F10.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>电导率传感器可辅助探究复分解反应的实质。相同条件下,离子浓度越大,电导率越大,溶液导电性越强。将含有酚酞的<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/9/D0297358BB0227FF96AF8FD5DEB46A08.png"><br>溶液平均分成两份置于两个烧杯中并插入电导率传感器,往其中一份滴加稀硫酸,往另一份滴加硫酸钠溶液,测得溶液的电导率变化如图所示。下列说法正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/9/C2BD31E2F2B3EFB52E7F8DC04009E4B8.png"><br>A.乙曲线电导率减小过程中,溶电液由红色变为无色<br>B.乙曲线对应的反应中四种离子数目都减少<br>C.甲曲线对应氢氧化钡与硫酸钠反应<br>D.甲曲线上的M点代表两种溶液恰好完全反应<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/a4dbdd84a416469197e6d5acaf65c509/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/8c43f6f6c0414b5f8a9f602b2a745ff1/4CF6AAAEE88B993D31C441F6DA18B6E8.png"><br><br>※题型：问答题※知识点：问答题※试题难度：中等<br>某同学设计了一个验证某氯化钠溶液中混有碳酸钠、硫酸钠和<br>氢氧化钠<br>的实验流程:<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/468B1A8863D7D7467B3E3C3504F3F36D.png"><br>1.A试管中的溶液呈红色,说明溶液显_______________性。<br>2.依据B中_______________现象即可判断原溶液中一定含有NaOH。3.再向C中加入适量X溶液,可以完成对<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/996D81C497C6D76B4B7CF28DBC8C23D9.png"><br>和<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/049D802E7350A56DC61AAD18655E5681.png"><br>的验证。X溶液可能是_______________。(填字母序号)<br>A.稀盐酸 B.硫酸 C.稀硝酸 D.氯化钙<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/788cb180774e446a8ecf6c352a0325b0/636AA2D1927B032BE56A0BE9B44DE09B.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/f8742b408fdf49d190dcbee7394fc08b/CD49430E7D049644DD45E3C741234DE9.png"><br><br>※题型：问答题※知识点：问答题※试题难度：中等<br>“飞花令”是中国诗词的一种接龙游戏。化学兴趣小组模仿“飞花令”游戏规则,进行物质间转化的接龙比赛,其比赛规则是:从同一物质开始进行转化,接龙物质不能重复且必须含有指定元素,以转化路径长<br>且正确<br>者为比赛胜者。某两场比赛的过程记录如下(“→”表示某一种物质经一步反应可转化为另一种物质)。<br>1.指定元素氢元素 起始物质HCl 比赛胜者:乙同学 甲同学HCl→<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/AA5DD1505F1D7A06A012CABC988FF45C.png"><br> 乙同学:<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/E1BF784F3699D5722E8C185EEB1E6CC5.png"><br>乙同学在方框中应填物质的化学式是_____________(写一种即可);2.指定元素钡元素 起始物质:BaO 比赛胜者:丁同学丙同学:<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/C84863CE1E3C1BBE34CE5FFC833831CE.png"><br>下列能使丁同学获胜的方案有_____________(填字母)。A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/D34909311B77E04DA22EF03EADB8ED00.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/A9051BC197F2BC086B07DB473DC207B7.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/47512D5FF329E9F15C6140005EB81A4D.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/15/65BFDBD970A2FD6A98CF75702B852BB2.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/2ca9be2ea66547f48254994f4094743e/798DDCD6FDE4906D7211ADD096B32F9D.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/02c30b0c903f4ef1a00c226be140e1a7/7674DDEC8ABF3B76262067188333228D.png"><br><br>※题型：实验题※知识点：实验题※试题难度：中等<br>热水瓶用久后,瓶胆内壁常附着一层水垢,其成分是碳酸钙、氢氧化镁及少量水。实验室现有一瓶水垢样品,为测定其中各成分的质量分数,某化学兴趣小组的同学利用如图所示装置进行实验(该装置气密性良好,<br>A<br>、<br>C<br>、<br>D<br>中所装药品足量)。<br>已知<br>:<br>碱石灰是氧化钙和<br>氢氧化钠<br>的混合物;加热条件下,氢氧化镁易分解,反应的化学方程式为<br>Mg(OH)<br><sub></sub><sup><img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/FC5DABD9802F18EE1740E25303EA496D.png"><br></sup><br>MgO+H<br><sub></sub><br>O<br>↑。<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/1/14/DB3E86CDBD99EBF2627A4E4C351343D2.png"><br>部分实验步骤如下:<br>Ⅰ<br>.<br>将质量为<br>m<br>的样品装入装置<br>B<br>的玻璃管中,按图连接好装置,关闭弹簧夹,给样品加热;<br>Ⅱ<br>.<br>待样品完全反应,先打开弹簧夹通入空气,再熄灭酒精喷灯,直到玻璃管冷却;<br>Ⅲ<br>.<br>实验完毕,测得装置<br>C<br>、<br>D<br>中的液体质量分别增加了<br>m<br><sub></sub><br>、<br>m<br><sub></sub><br>;<br>Ⅳ根据实验所测数据计算该样品中碳酸钙、氢氧化镁和水的质量分数。<br>请<br>冋答下列<br>问题:<br>1.装置C中所装药品为。2.装置D中发生反应的化学方程式为。3.该水垢样品中碳酸钙的质量分数表达式为。4.实验反思:实验步骤不变,若没存装置A,会导致氢氧化镁的测定结果(填“偏大”“偏小”或“无法判断”)。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/5127e96eb33444afa3d5c01da15ac1b1/8790B0D3990D0B406267CC5AE76AE76F.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/d0f3a066b18847f8b4f5edc8be7bb2d0/55E51F700376034DB8D8C6C0C0F7658B.png"><br><br>
页:
[1]