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【单选题】
对化学方程式C+2CuO 高温 . 2Cu+CO 2 ↑理解不正确的是（　　）
A.
木炭与氧化铜在高温下反应生成铜和二氧化碳
B.
12份质量的碳可与160份质量的氧化铜在高温下反应生成128份质量的铜和44份质量的二氧化碳
C.
若以N A 代表6.02×10 23 个粒子，则N A 个碳原子与2N A 个氧化铜分子在高温下反应，生成2N A 个铜原子和N A 个二氧化碳分子
D.
一个碳原子和两个氧化铜分子高温加热时可生成两个铜原子和一个二氧化碳分子
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参考答案：
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【简答题】Please paraphrase the following sentences: It was only that one day I happened to be walking behind them, and the curious up-and-down motion of a load of wood drew my attention to the human being bene...
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【单选题】下列代码的输出结果是() void fun(int); main( ) { int w=2; fun(w); } void fun(int k) { if (k>0) fun(k-1); printf("%d",k); }
A.
210
B.
012
C.
0
D.
201
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【简答题】• Suppose that one day you are going to do business with a westerner. You'd like to have dinner with him and show him the beautiful sight of your city. But in the westerner's perspective, it has nothi...
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【单选题】Oil in this world will be exhausted one day, in the future, but that may not come so soon as we would suppose.
A.
Y
B.
N
C.
NG
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【单选题】I'm not such a fool as to imagine I might stand a chance now that you are so above me. But don't suppose I'm content to stay nobody all my life. One day I will leave you. You can be sure of that. ...
A.
Hidden Figures
B.
The Blind Side
C.
Green Book
D.
Far From The Madding Crowd
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【单选题】Given the following Classical-type table shows the number of days of labor input required to obtain one unit of output of each of the three commodities in each of the two countries:【图片】Suppose that th...
A.
export good T and import goods X and Y.
B.
export good Y and import goods T and X.
C.
export goods T and X and import good Y.
D.
export goods X and Y and import good T.
查看完整题目与答案
【单选题】下列代码的输出结果是() void fun(int); main( ) { int w=2; fun(w); } void fun(int k) { if (k>0) fun(k-1); printf(“%d”,k); }
A.
210
B.
12
C.
0
D.
201
查看完整题目与答案
【单选题】Suppose that for the past two months, you have studied economics one hour a day. You now decide to study economics two hours a day. For the past two months, ( ).
A.
your marginal cost of studying economics for an hour must have exceeded its marginal benefit
B.
the marginal cost of studying economics must have fallen
C.
your marginal benefit from studying economics an hour must have been greater than its marginal cost
D.
the opportunity cost of studying economics must have risen.
查看完整题目与答案
【简答题】• I'm not such a fool as to imagine I might stand a chance now that you are so above me. But don't suppose I 'm content to stay nobody all my life. One day I will leave you. You can be sure of tha...
查看完整题目与答案
【单选题】Suppose that for the past two months, you have studied economics one hour a day. You now decide to study economics two hours a day. For the past two months, ________. (假设在过去的两个月里,你每天都在学习经济学。你现在决定每天两个...
A.
your marginal cost of studying economics for an hour must have exceeded its marginal benefit你经济学一小时的边际成本必须超过其边际收益
B.
the marginal cost of studying economics must have fallen研究经济学的边际成本必须下降
C.
your marginal benefit from studying economics an hour must have been greater than its marginal cost小时学习经济学的边际效益必须大于其边际成本
D.
the opportunity cost of studying economics must have risen.学习经济学的机会成本必须上升。
查看完整题目与答案
相关题目：
【简答题】Please paraphrase the following sentences: It was only that one day I happened to be walking behind them, and the curious up-and-down motion of a load of wood drew my attention to the human being bene...
查看完整题目与答案
【单选题】下列代码的输出结果是() void fun(int); main( ) { int w=2; fun(w); } void fun(int k) { if (k>0) fun(k-1); printf("%d",k); }
A.
210
B.
012
C.
0
D.
201
查看完整题目与答案
【简答题】• Suppose that one day you are going to do business with a westerner. You'd like to have dinner with him and show him the beautiful sight of your city. But in the westerner's perspective, it has nothi...
查看完整题目与答案
【单选题】Oil in this world will be exhausted one day, in the future, but that may not come so soon as we would suppose.
A.
Y
B.
N
C.
NG
查看完整题目与答案
【单选题】I'm not such a fool as to imagine I might stand a chance now that you are so above me. But don't suppose I'm content to stay nobody all my life. One day I will leave you. You can be sure of that. ...
A.
Hidden Figures
B.
The Blind Side
C.
Green Book
D.
Far From The Madding Crowd
查看完整题目与答案
【单选题】Given the following Classical-type table shows the number of days of labor input required to obtain one unit of output of each of the three commodities in each of the two countries:【图片】Suppose that th...
A.
export good T and import goods X and Y.
B.
export good Y and import goods T and X.
C.
export goods T and X and import good Y.
D.
export goods X and Y and import good T.
查看完整题目与答案
【单选题】下列代码的输出结果是() void fun(int); main( ) { int w=2; fun(w); } void fun(int k) { if (k>0) fun(k-1); printf(“%d”,k); }
A.
210
B.
12
C.
0
D.
201
查看完整题目与答案
【单选题】Suppose that for the past two months, you have studied economics one hour a day. You now decide to study economics two hours a day. For the past two months, ( ).
A.
your marginal cost of studying economics for an hour must have exceeded its marginal benefit
B.
the marginal cost of studying economics must have fallen
C.
your marginal benefit from studying economics an hour must have been greater than its marginal cost
D.
the opportunity cost of studying economics must have risen.
查看完整题目与答案
【简答题】• I'm not such a fool as to imagine I might stand a chance now that you are so above me. But don't suppose I 'm content to stay nobody all my life. One day I will leave you. You can be sure of tha...
查看完整题目与答案
【单选题】Suppose that for the past two months, you have studied economics one hour a day. You now decide to study economics two hours a day. For the past two months, ________. (假设在过去的两个月里,你每天都在学习经济学。你现在决定每天两个...
A.
your marginal cost of studying economics for an hour must have exceeded its marginal benefit你经济学一小时的边际成本必须超过其边际收益
B.
the marginal cost of studying economics must have fallen研究经济学的边际成本必须下降
C.
your marginal benefit from studying economics an hour must have been greater than its marginal cost小时学习经济学的边际效益必须大于其边际成本
D.
the opportunity cost of studying economics must have risen.学习经济学的机会成本必须上升。
查看完整题目与答案
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