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【单选题】
下列关于矢量与标量的描述正确的是:
A.
当用矢量和标量描述同一物理量时，两个描述是没有区别的。
B.
矢量可以用单位矢量表示其方向，标量用“±“表示其方向。
C.
矢量用于描述研究对象的状态，标量用于描述研究对象的位置。
D.
矢量可以借助标量来表示，标量也可以借助矢量来表示。
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参考答案：
举一反三
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深Ⅱ度
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【判断题】一般工业用气较为均衡,民用气波动较大。( )
A.
正确
B.
错误
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【单选题】一般工业用气较为均衡,民用气波动较大。( )
A.
较为均衡;波动较大
B.
波动较大;较为均衡
C.
较为均衡;较为均衡
D.
波动较大;波动较大
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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.
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【单选题】下面关于实例和类型明细表的说法错误的是（ ）
A.
实例明细表可以将每一构件作为单独的行列出
B.
类型明细表可以按构件类型列出
C.
实例和类型明细表是针对不同的类别而分的
D.
实例和类型明细表可以相互转换
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【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.
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相关题目：
【单选题】患者男性,25岁,左上肢烧伤,创面有大水泡,剧痛,其烧伤深度为
A.
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B.
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C.
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D.
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E.
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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...
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...
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【判断题】一般工业用气较为均衡,民用气波动较大。( )
A.
正确
B.
错误
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【单选题】一般工业用气较为均衡,民用气波动较大。( )
A.
较为均衡;波动较大
B.
波动较大;较为均衡
C.
较为均衡;较为均衡
D.
波动较大;波动较大
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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】下面关于实例和类型明细表的说法错误的是（ ）
A.
实例明细表可以将每一构件作为单独的行列出
B.
类型明细表可以按构件类型列出
C.
实例和类型明细表是针对不同的类别而分的
D.
实例和类型明细表可以相互转换
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
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