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【单选题】
KR—20反映研究工具信度的哪个特征？（）A.
敏感性
B.
等同性
C.
稳定性
D.
内在一致性
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【简答题】Les bureaux ouvrent à 8h et ferment à 19h.
【简答题】• Les bureaux sont ...... ..(confortable)
【单选题】A l'Université, les bureaux des professeurs sont ; les fenêtres des bureaux sont .
A.
inconfortables; grandes
B.
inconfortables; petites
C.
confortables; grandes
D.
confortables; petites
【单选题】Samara's income is $30 a month and she spends all of it on music downloads and gasoline. The price of a music download is $3 and the price of a gallon of gasoline is $3. At Samara's best affordable po...
A.
0.50.5
B.
11
C.
1.51.5
D.
More information is needed to determine the marginal rate of substitution.需要更多的信息来确定边际替代率。
【单选题】Consumers expect that the price of a gallon of gasoline will rise next week. As a result, (消费者预计,一加仑汽油的价格将在下周上涨。结果是,——中文由在线翻译而来,仅供参考.下同.)
A.
today's supply of gasoline increases.今天汽油供应增加。
B.
today's demand for gasoline increases.今天汽油需求增加。
C.
the price of a gallon of gasoline falls today.一加仑汽油的价格今天下跌。
D.
next week's supply of gasoline decreases.下周汽油供应减少。
【单选题】The rate at which Sam is willing to give up a gallon of gasoline to get one more pound of coffee, and remain on the same indifference curve is called his
A.
opportunity cost of coffee.
B.
opportunity cost of gasoline.
C.
personal price of coffee.
D.
marginal rate of substitution.
【单选题】Samara's income is $30 a month and she spends all of it on music downloads and gasoline. The price of a music download is $1.50 and the price of a gallon of gasoline is $3. At Samara's best affordable...
A.
0.5 of a download
B.
1 download
C.
1.5 downloads
D.
2 downloads
【多选题】Où ont lieu les concerts de musique?
A.
Les parcs
B.
La rue
C.
Les écoles
D.
Les musées
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