在一个上下水温均匀，并保持恒温的水池中，有一个小气泡缓慢上升，气泡上升过程中正确的说法是()。(设泡内为理想气体)
A. 气泡内能减少，放出热量
B. 气泡内能不变，对外做功，吸收热量
C. 气泡内能不变，不放热也不吸热
D. 气泡内能增加，吸收热量
查看答案
It can be inferred from the passage that the minimal basis for a complaint to the International Trade Commission is which of the following？
A foreign competitor has received a subsidy from a foreign government.
B. A foreign competitor has substantially increased the volume of products shipped to the United States.
C. A foreign competitor is selling products in the United States at less than fair value.
D. The company requesting import relief has been injured by the sale of imports in the United States.
From the passage, we can infer that ______.
A. all European nations are eager to become members of the European Monetary Union
B. there is much uncertainty for the success of the Euro
C. the euro will make critical contributions to a unified European
D. it is not a wise idea to have the euro as a standard currency in such a hurry
股票的代销、包销最大不得超过()。
A. 100日
B. 90日
C. 80日
D. 88日
巨幼红细胞贫血的血清叶酸含量测定低于
A. 6.5nmol/L
B. 6.9nmol/L
C. 6.8nmol/L
D. 6.6nmol/L
E. 6.7nmoL/L
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