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【多选题】
移动电子商务与传统电子商务相比的优势包括（ ）。A.
不受时空限制
B.
更好的个性化服务
C.
支付更加方便、快捷
D.
基于位置的服务
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【简答题】阅读理解。 Washington D. C. is the capital of the United States. It's the center of the national gov-ernment. It's a busy, working city with a large population. But what is more, Washington is also a city ...
【简答题】Santa Fe, the capital of New Mexico, U.S.A.,is in the central part of the state, on the Santa Fe River, which flows into the Rio Grande 35 kilometres west of the city. More than two thousand metres ab...
【单选题】Assume a two-country two-good two-input model where the following relationships hold: (K/L) U.S. > (K/L) ROW (K/L) automobiles > (K/L) shoes Where (K/L) U.S. is the capital-labor ratio in the United S...
A.
the relative labor endowment is higher than in the Rest of the World.
B.
the price of automobiles relative to shoes is lower than in the Rest of the World.
C.
the price of shoes relative to automobiles is lower than in the Rest of the World.
D.
the relative capital endowment is the same as in the Rest of the World.
【单选题】关于血管升压素（ADH），错误的是（）
A.
由下丘脑视上核和室旁核的神经元合成
B.
沿下丘脑-垂体束的轴突运输到神经垂体储存
C.
增加远端小管和集合管对水的重吸收
D.
增加远端小管和集合管对NaCl的重吸收
E.
也称血管升压素
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