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【单选题】
下列情况下,导致试剂质量增加是( )。A.
盛浓硝酸的瓶口敝开
B.
盛浓盐酸的瓶口敝开
C.
盛固体苛性钠的瓶口敝开
D.
盛胆矾的瓶口敞开
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【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
【单选题】The rate at which a person 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 or her
A.
relative cost of coffee in terms of gasoline.
B.
indifference cost of coffee.
C.
personal price of coffee.
D.
marginal rate of substitution.
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