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【单选题】
旅游合同的形式是（ ）A.
可以采用口头形式
B.
应当采用书面形式
C.
应当采用口头形式或书面形式
D.
可以采用推定形式
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【简答题】Passage Translation Directions: Translate the following passage into Chinese. LS9 has used its technology to turn microbes into factories for fatty acids containing between 8 and 20 carbon atoms —the ...
【简答题】百忧解属
【单选题】What does the passage mainly talk about?
A.
It has been proved that magnets do have certain effect on living beings.
B.
How iron atoms in a magnet are crammed together.
C.
Scientists carried out experiments to test the existence of magnets.
D.
It is very easy to test the existence of magnets.
【单选题】Standard Molar Entropies of Selected Substances at 298 K 【图片】In accordance to the table, what sentence holds true?
A.
More complex molecules have lower standard molar enthalpy values than smaller or simpler molecules.
B.
There are more possible arrangements of atoms in space for larger, more complex molecules, increasing the number of possible microstates.
C.
Gases tend to have much lower standard molar enthalpies than liquids, and liquids tend to have lower values than solids, when comparing the same or similar substances.
D.
All the above
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