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【单选题】
食管癌多见于A.
胸中段
B.
胸上段
C.
颈段
D.
腹段
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举一反三
【单选题】Which of the following statements regarding arbitrage is the most correct?
A.
Any situation in which it is possible to make a profit without taking any risk is known as an arbitrage opportunity.
B.
Any situation in which it is possible to make a profit without making any investment is known as an arbitrage opportunity.
C.
We call a competitive market in which there are no arbitrage opportunities an arbitrage market.
D.
The practice of buying and selling equivalent goods in different markets to take advantage of a price difference is known as arbitrage.
【简答题】道德教育的认知模式理论的提出者是（ ）。
【单选题】A ship can never have lower Security Level than the Port Facility
A.
A ship can have lower Security Level than the Port Facility
B.
A ship can never have higher Security Level than the Port Facility
C.
A ship can never have lower Security Level than the Port Facility
D.
A ship must have the same Security Level than the Port Facility
【简答题】“内河钢船建造规范”所指的单壳油船是指结构形式为单底（或双底）、（）、平甲板的纵骨架式或横骨架式油船。
【单选题】A currency trader engaging in arbitrage would be doing what?
A.
Purchasing real estate in major financial centers.
B.
Purchasing an asset in one market and simultaneously selling it at a different price in another market.
C.
Choosing an investment portfolio that contained assets from many different countries.
D.
Selling borrowed currency in the hopes that there will be a large appreciation.
【简答题】比较1.0mol N 2 和1.0mol CO的下列物理量：①质量 ②分子总数 ③原子总数，其中 相同的是： ①③ B．①② C．①②③ D．②③
【单选题】比较1.0mol 和1.0mol CO的下列物理量:(1)质量;(2)分子数;(3)原子总数。其中相同的是
A.
只有（1）
B.
只有（2）
C.
（1）（2）
D.
（1）（2）（3）
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