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【单选题】
下面就上流式厌氧污泥床反应器的特点，叙述不正确的是A.
污泥呈颗粒状，大量的有机物都是依靠颗粒污泥来去除
B.
既可实现进水、配水，又可实现水、气、固三相分离和浮渣处理及污泥排出
C.
反应器负荷高、体积小、占地面积少
D.
上流式的投资费用较少，氧利用效率高
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【单选题】In which session did the General Assembly of the World Tourism Organization decide the date of World Tourism Day?
A.
In the first session.
B.
In the second session.
C.
In the third session.
D.
In the fifth session.
【简答题】In 1883, Coubertin first proposed the similar to the ancient Olympic s, it is not a succession, but the past only to the Greeks to participate in the sports will expand to the world. ...
【判断题】Xi jinping was elected general secretary of the CPC central committee at the first plenary session of the 18th CPC central committee in November 2012. In March 2013, Xi jinping was elected President a...
A.
正确
B.
错误
【单选题】The ( ) to the First Session agreed that specific problems concerning plant quarantine existed in all member countries.
A.
country
B.
team
C.
group
D.
delegates
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