下列各组离子与过量NaOH 溶液反应时,不生成沉淀的是
未知类型:{'options': ['[tex=6.571x1.429]cRdJXWynii2LCkTkPIfNMnnYOrZDx/vXjgWX0+vkNVM=[/tex]', '[tex=6.714x1.429]DE+Cg7qQmIAmX1WL9+cWPoZ6yvtexonxJqA/Euxg9sE=[/tex]', '[tex=7.143x1.429]SKuKQ9qz5LNQhjfO0x8Sty93ighiyABsSPUJsDT6s+g=[/tex]', '[tex=7.143x1.429]jiG9brGrBkmzdhcolg1SboODkMebKfNRtKiCdY81hNM=[/tex]'], 'type': 102}
未知类型:{'options': ['[tex=6.571x1.429]cRdJXWynii2LCkTkPIfNMnnYOrZDx/vXjgWX0+vkNVM=[/tex]', '[tex=6.714x1.429]DE+Cg7qQmIAmX1WL9+cWPoZ6yvtexonxJqA/Euxg9sE=[/tex]', '[tex=7.143x1.429]SKuKQ9qz5LNQhjfO0x8Sty93ighiyABsSPUJsDT6s+g=[/tex]', '[tex=7.143x1.429]jiG9brGrBkmzdhcolg1SboODkMebKfNRtKiCdY81hNM=[/tex]'], 'type': 102}
举一反三
- 某人对商品x的需求函数是[tex=5.214x1.214]0m6eBd5eyK0NjuxeKfwtIw==[/tex],[tex=4.214x1.214]I717YsPbj8Rnym1v2XQ+sFNkUl7mqUsGwbjwjXmy2xc=[/tex],这里[tex=0.571x1.0]Za328cIB4SeR7rrzY+MM5Q==[/tex]是[tex=0.571x0.786]ZSLOI4fiO1oAbVC5M8IVkA==[/tex]的价格。如果商品x 的价格是0.5元,那么他对商品x的需求价格弹性是 未知类型:{'options': ['-10', '- 1/5', '-1/10', '\xa0- 1/3'], 'type': 102}
- 设I(x):x是整数;N(x):x是负数;S(x,y):y是x的平方命题“任何整数的平方非负”可表示为谓词公式 未知类型:{'options': ['[tex=11.929x1.357]Ab8zVcSaawMRd84sw7i/JAhyPtafOzIiYwAO+plGfU5YAO/QV3YAB0GXAXRhZ7CliwQzjDdB7FbEZsDooWfNcKY5XHTFYR6Idofr8S7Wax4=[/tex]', '[tex=11.214x1.357]Vs8Vcw/zPN7kvQW5F7NycC9PlK+v4vkWJ4hyjFXkOftd5yicp99G5Tnp+KzILEwlHDVGwqo5md6rK5TfGKT6pg==[/tex]', '[tex=11.214x1.357]Ab8zVcSaawMRd84sw7i/JPLc5lkPb0vCB3HAoQdCvLgUiouuuSbyQIQ62rJKADX6FQeTBBqnQa6q/6Qzw2KRYw==[/tex]', '[tex=10.929x1.357]mX5PRaABESRf9QDOAojNZuqee9gfCLdnz+se+AlyZp5SHDOcNaBoGKl0MgSjkAb89Uw7a1sL8h1OT0gFb59yAg==[/tex]'], 'type': 102}
- 含有下列离子的溶液与[tex=2.214x1.214]HiZvhYh08myFoK+FVl9tWF3Xcy61HMqvzMhWQs/Embg=[/tex]溶液反应,不生成黑色沉淀的是: 未知类型:{'options': ['[tex=4.357x1.429]A6H+OG0QA4sWFxI6IzoMt/J77W6YUBiTe4ZSanwaKPMqn+X1Mg1FpqSG3xFfhDpu[/tex]', '[tex=4.786x1.429]+my1OE4MsjRf3gD0ITDP09pWMDF9NbeIsLtAF9eHsapiO1luNpZpbCbOsQ6MPCb7[/tex]', '[tex=4.5x1.429]jgqrf+hf7VqcxMQGHqrpxpR8FOIqS2km0fXzn9y18tThqW6ZGDEQSdxESEr42iZ/[/tex]', '[tex=5.071x1.429]4stPqxAvmLRZ6VPsk2TpBPvOZsSFAtU3pJ0tWnDqJUoTHLT0CExHiwfFs7JYpdJy[/tex]', '[tex=4.5x1.429]cpouD6wA3ieotlaIVyyUW40HqaY75wJB07ZGDzoQ8+E5hjJ7nNDTIp352VCTEUKg[/tex]'], 'type': 102}
- 能产生正弦波振荡的必要条件是() [br][/br] 未知类型:{'options': ['[tex=4.071x1.5]ZHMXiER8ZaDxxsVT/bVH3+lsP/UBZFV5rlr3gMkTWAo=[/tex]', '[tex=3.786x1.5]X/dAPQG629Xxhzt6x5zsxXQwhBAICzqMGDmsrceVcnk=[/tex]', '[tex=3.786x1.5]X/dAPQG629Xxhzt6x5zsxUy/rK6N2R3d20utEgygqgQ=[/tex]', '[tex=6.214x1.5]4p1ea1IYayd4Z8XNUjoBPD5L7ZWp5rKrXhXmNG5YIgo=[/tex]'], 'type': 102}
- 在某混合溶液中加入过量氨水,得到沉淀和无色溶液﹔再在所得的沉淀中加入过量 NaOH溶液,沉淀完全溶解得到无色溶液。原溶液中所含的离子是 未知类型:{'options': ['[tex=6.857x1.429]VIFl9m+UAZBsVTaV90MJdLLaKGEuRy8Q2Fvcvwzxz4o=[/tex]', '[tex=6.643x1.429]CGRtIOKtuYIPdyjHIYs909rFU+DZcuJ9tS+VAi+f5Ks=[/tex]', '[tex=6.714x1.429]HE9GFXpghJsaGNI73Rz9AuYoeSNQqUtdvPLjY1xQO8A=[/tex]', '[tex=6.857x1.429]dBOJkK7A/hLAmxP/+Dam4xASN8oXm5jRLfuxBPdoxZs=[/tex]'], 'type': 102}