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【简答题】
我国汽车维修业存在的主要问题有哪些?
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举一反三
【简答题】已知: CaCO 3 (s) = Ca 2+ (aq) + CO 3 2- (aq) Δ r G m Ө ( kJ · mol -1 ) - 1128.80 - 553.54 - 527.90 则 CaCO 3 的 K sp 为 ____________ 。
【单选题】A production function:
A.
shows the relationship between a firm's costs and revenues.
B.
shows the relationship between production and profits.
C.
shows the relationship between inputs and the maximum output that can be produced from those inputs.
D.
shows the relationship between variable inputs and fixed inputs.
【简答题】总生产函数(aggregate production function)
【简答题】生产函数(production function)
【单选题】The aggregate production function
A.
measures the productivity of labor as leisure decreases.
B.
increases only with increases in productivity.
C.
shows that real GDP can increase because of increased productivity as well as increased labor hours.
D.
cannot show the impacts of productivity improvements.
【简答题】已知下列反应与其相应的热力学数据： Ca(OH)2+CO2(g)===CaCO3(s)+H2O(1) △fGmθ(298．15 K)／(kJ.mol-1)一898．5 —394．4 —1 128．8 —237．1 △fHmθ(298．15 K)／(ki.mol-1)一560．7 —393．5 —1 206．9 —285．8 试通过计算说明： (1)标准状态下，298．15 K时反应的Kθ为多少? ...
【单选题】The production function describes:
A.
the relationship between the quantity of inputs utilized and the quantity of output produced.
B.
how inputs are most profitably used in production.
C.
the most cost-effective method of combining various inputs in the production process.
D.
the relationship between a firm's revenue and its level of production.
【单选题】已知在CaCO 3 饱和溶液中存在以下平衡：CaCO 3 （s）═══Ca 2+ +CO 3 2- 。在此溶液中加入Na 2 CO 3 溶液，平衡将向哪个方向移动？（）
A.
向右
B.
向左
C.
不变
D.
反应停止
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