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【判断题】
活性污泥法的产泥量比生物膜法少。( )A.
正确
B.
错误
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】关于PCR技术的叙述不正确的是:( )
A.
PCR技术经过变性、复性、延伸三个阶段
B.
PCR技术需要在体内进行
C.
PCR技术可用于基因诊断,判断亲缘关系
D.
PCR技术利用碱基互补配对的原则
【简答题】Sometimes a bus network is done with________.
【单选题】-Does your father go to work by car every day? -No, he sometimes takes bus.
A.
a; the
B.
the; a
C.
/; a
D.
a; /
【简答题】4 A. Raul
takes sometimes the bus to work. B. Raul
often takes the bus to work. C. Raul
rarely takes the bus to work.
【单选题】Sometimes a bus ____gets on the bus to check the tickets.
A.
agent
B.
officer
C.
conductor
D.
inspector
【单选题】*---Does your mother go to work by bus every day? ---No, she sometimes takes bus.
A.
a ; the
B.
/ ; a
C.
the ; /
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