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【单选题】
15K,101325Pa 下, 1dm 3 水中能溶解 49mol 氧或 23.5mol 氮,在标准情况下, 1dm 3 水中能溶解的空气的量为( )。A.
25.5mol
B.
28.6mol
C.
96mol
D.
72.5mol
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【单选题】.----Is she older than you? -----Yes, she is older than I ___ three years.
A.
for
B.
by
C.
in
D.
on
【单选题】Operator: Good morning.Future Software.How may I direct your call? Customer: After Sales Service Department, please. Operator: __________. I’ll put you through.
A.
Just a moment please
B.
I see
C.
Thank you
D.
No problem
【单选题】What are the advantages of the job of a sales representative, according to Ray?
A.
He can set his own schedule.
B.
He can do things in his own way.
C.
There' s a lot of variety in the work.
D.
All of the above.
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