本课配套习题挑战模式1/5
A: 地壳中金属元素的含量 |
B: 金属的导电性、延展性 |
C: 金属的活动性和冶炼水平 |
D: 金属的硬度 |
- 提示1:5LiN5ZCM5pe25pyf5Lq65Lus5a+56YeR5bGe55qE5Ya254K85pa55rOV5ZKM5rC05bmz5LiN5ZCM77yM5a+86Ie05Lq65Lus5L2/55So55qE6YeR5bGe5p2Q5paZ5LiN5ZCM77yO
- 提示2:5LuO5rS75Yqo5oCn5LiK5Lmf5Y+v5Lul55yL5Ye655Sx6ZOc5Yiw6ZOB5Yiw6ZOd5ZCI6YeR5piv6YCQ5riQ5aKe5by655qE77yM6YeR5bGe6LaK5rS75rO86LaK5LiN5a655piT54K85b6X5Y2V6LSo44CC
- 答案:Qw==
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
本课配套习题挑战模式2/5
A: 炼铁的过程中加入石灰石主要是为了除去矿石中的二氧化硅 |
B: 炼铁的磁铁矿主要成分为Fe2O3 |
C: 反应的主要还原剂是焦炭 |
D: 冶炼出的产品是纯铁 |
- 提示1:5Yeg56eN6ZOB55+/55qE5Li76KaB5oiQ5YiG6KaB5YiG5riF77yM56OB6ZOB55+/55qE5Li76KaB5oiQ5YiG5Li6RmU8c3ViPjM8L3N1Yj5PPHN1Yj40PC9zdWI+44CC
- 提示2:5Zyo55Sf5Lqn5bqU55So5Lit77yM5LiA6Iis5peg5rOV5Yi25b6X57qv55qE5Lqn54mp77yM5LiA5a6a5Lya5ZCr5pyJ5LiA5a6a6YeP55qE5p2C6LSo44CC
- 答案:QQ==
55+z54Gw55+z5Y+v5Lul5LiO5LqM5rCn5YyW56GF5Y+R55Sf5Y+N5bqU77yM5bCG5LqM5rCn5YyW56GF6L2s5YyW5Li655+/5rij44CCQemhueato+ehruOAgg==
本课配套习题挑战模式3/5
A: |
B: |
C: |
D: |
- 提示1:6auY54KJ54K86ZOB55qE6L+H56iL5Li76KaB5Y6f55CG5Li6PGltZyB3aWR0aD0xOTYgaGVpZ2h0PTM0IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNzcvQTEvckJBQ0UxVFJ6VE96VDl4ZEFBQUVPR0UxN240NzgyLnBuZyI+77yM6L+Y5pyJ5Lik5Liq5YWz5LqOQ088c3ViPjI8L3N1Yj7nmoTlj43lupTjgII=
- 答案:RA==
6auY54KJ54K86ZOB5piv5Yi25Y+W6ZOB5Y2V6LSo77yM5rKh5pyJ6ZOB6KKr5rCn5YyW5Li65Zub5rCn5YyW5LiJ6ZOB55qE6L+H56iL44CC
本课配套习题挑战模式4/5
A: 等于4.2g |
B: 大于4.2g |
C: 小于4.2g |
D: 不大于4.2g |
- 提示1:5oyJ54Wn5b6X5Yiw5Y2V6LSo6ZOB55qE6LSo6YeP77yM5qC55o2u5YyW5a2m5pa556iL5byP5p2l6K6h566X6ZyA6KaBQ0/nmoTotKjph4/jgII=
- 提示2:6L+Y6KaB6ICD6JmR5Yiw5a6e6aqM5pON5L2c77yM5Zyo5Y+N5bqU5byA5aeL5LmL5YmN6KaB5YWI55SoQ0/lhYXmu6Hoo4Xnva7vvIzlj43lupTlrozlkI7kuZ/pnIDopoHmnIDlkI7lgZzmraLpgJrlhaVDT+OAgg==
- 答案:Qg==
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
本课配套习题挑战模式5/5
用CO还原铁的氧化物1mg,得到铁粉0.75mg,则下列说法中正确的是
A: 该氧化物是Fe2O3 |
B: 该氧化物可能是由FeO、Fe2O3、Fe3O4组成的混合物 |
C: 该氧化物是FeO |
D: 该氧化物中不含FeO |
- 提示1:PHA+MW1n6ZOB55qE5rCn5YyW54mp5Y+v5Lul5b6X5Yiw6ZOB5Y2V6LSoMC43NW1n77yM6K+B5piO5Zyo5re35ZCI54mp5Lit5ZCr5pyJ6ZOB55qE6LSo6YeP5YiG5pWw5Li6NzUlPC9wPg==
- 提示2:PHA+5YiG5Yir6K6h566X5Ye6RmVP44CBRmU8c3ViPjI8L3N1Yj5PPHN1Yj4zPC9zdWI+44CBRmU8c3ViPjM8L3N1Yj5PPHN1Yj40PC9zdWI+5LiJ56eN54mp6LSo5ZCr5pyJ6ZOB5YWD57Sg55qE6LSo6YeP5YiG5pWw77yM6L+b6KGM5YiG5p6Q5Y2z5Y+vPC9wPg==
- 答案:Qg==
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