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【单选题】
A _____ is a type of loan that has the same cash flow payment every year throughout the life of the loan.A.
discount loan
B.
simple loan
C.
fixed-payment loan
D.
interest-free loan
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【单选题】对脂溶性的酸性化合物,提取时最经济的方法是
A.
加水煮沸，放冷沉淀
B.
加碱水煮沸，加酸沉淀
C.
用 苯 回流提取，回收溶剂
D.
乙醇 回流提取，回收溶剂
E.
加酸水煮沸，加碱沉淀
【简答题】Which is NOT the correct kind of behavior you should observe at
the opera?A. You will be expected to be in your seat before the opera begins. B. You should not make noise during the opera. C. You shou...
【单选题】How did Peking Opera came into being?
A.
When four Henan opera troupes performed for the 80th birthday of the Emperor.
B.
When four Heibei opera troupes performed for the 80th birthday of the Emperor.
C.
When four Anhui opera troupes performed for the 80th birthday of the Emperor.
D.
When four Jiangsu opera troupes performed for the 80th birthday of the Emperor.
【单选题】The idea has been widely accepted ______ Beijing Opera should be added to the basic education in China. [ ]
A.
which
B.
when
C.
that
D.
/
【简答题】半轴是在( ) 与 驱动轮 之间传递动力的实心轴。
相关题目：
【单选题】对脂溶性的酸性化合物,提取时最经济的方法是
A.
加水煮沸，放冷沉淀
B.
加碱水煮沸，加酸沉淀
C.
用 苯 回流提取，回收溶剂
D.
乙醇 回流提取，回收溶剂
E.
加酸水煮沸，加碱沉淀