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【单选题】
生物接触氧化法是一种介于（）两者之间的生物处理技术，是具有活性污泥法特点的生物膜法，兼具两者的优点。A.
活性污泥法
B.
生物滤池法
C.
活性污泥法与生物滤池法
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举一反三
【单选题】Which of the following structure is the largest organ of the body?
A.
stomach
B.
small intestine
C.
skin
D.
heart
E.
muscle
【单选题】The intentions of those who coined the term 'ecotourism' were sincere.
A.
YES
B.
NO
C.
NOT GIVEN
【单选题】______, the factories had not closed, and those who needed work most were given a chance to survive during the econmic disaster.
A.
Unintentionally
B.
Mercifully
C.
Importunately
D.
Tragically
【单选题】We were very angry that there was little given to those who had worked the hardest on the project. [ ]
A.
credit
B.
punishment
C.
scold
D.
blame
【单选题】The（ ）is the hollow organ of the following organs.
A.
stomach
B.
liver
C.
kidney
D.
spleen
【单选题】_______ were given to those foreigners who helped the country ______ independence from Britain. [ ]
A.
Rewards; gain
B.
Awards; make
C.
Prizes; take
D.
Awards; get
【单选题】What is the organ of pigeon to produce pigeon milk?
A.
g landular stomach
B.
crop
C.
oral cavity
D.
muscular stomach
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