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【单选题】
下列各组中，不管以何种比例混合，只要总质量一定，充分燃烧后生成的二氧化碳的量不变的是( )A.
乙烯(C 2 H 4 )和苯(C 6 H 6 )
B.
乙醇和丙醇(CH 3 CH 2 CH 2 OH)
C.
乙醇和乙醚(C 2 H 5 OC 2 H 5 )
D.
甲醛( HCHO)和乙酸
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【简答题】灭菌是指（ ）
【简答题】冷灭菌是指()灭菌法。
【简答题】enable; dwarf; on track; and so forth; around the corner; The figures show that our economy is healthy and we are likely to achieve sustainable and balanced growth.
【简答题】enable; dwarf; on track; and so forth; around the corner; The high-rise building in the back makes our old house seem small .
【简答题】enable; dwarf; on track; and so forth; around the corner; With the money from her uncle, Jenny was able to enroll in a dancing school and chase her childhood dream of becoming a dancer.
【简答题】enable, dwarf, on track, and so forth, around the corner You see the lights in the students’ reading room? They never go out at night these days because the final exams are drawing near .
【单选题】dwarf distance What does dwarf mean
A.
short people
B.
shorten
C.
be unimportant
D.
extend
【单选题】In the country of Brobdingnag, the worst problem Gulliver had at the palace was the Queen’s dwarf, why?
A.
Because the dwarf was very poor and often asked me for money.
B.
Because the dwarf was very rude to Gulliver and behaved very badly.
C.
Because the Queen allowed the dwarf to do whatever he liked.
D.
Because the dwarf was a relative of the King.
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