皮皮学，免费搜题
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搜题
【单选题】
同工酶是指:A.
催化的化学反应相同
B.
催化不同的反应而理化性质相同
C.
酶的结构相同而存在部位不同
D.
由同一基因编码翻译后的加工修饰不同
E.
催化相同的化学反应理化性质也相同
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】对于额定工作压力≤1.0MPa的锅炉，锅内加药处理时，锅水总碱度应控制为()。
A.
6～26mmol/L
B.
7～26mmol/L
C.
8～26mmol/L
D.
9～26mmol/L
【简答题】Dear Sir, I am university student．I once thought life at the 76．_________ university must be excellent, but now I had changed my mind． 77．_________ I have three roommates, and I was the l...
【单选题】蒸发量为4.0t/h，工作压力为1.3MPa的蒸汽锅炉，采用锅外软化水处理时，若锅水固氯比为7，则锅水Cl-含量应控制为（）。
A.
＜400mg/L
B.
＜500mg/L
C.
＜600mg/L
D.
＜700mg/L
【单选题】听力原文：Dear Sir, After watching the discussion about boxing on television last night, I felt I must write to you. Before I saw this program, I had not given any thought to the dangers of boxing. However...
A.
He had thought it dangerous.
B.
He bad thought it bloody.
C.
He had thought there was nothing wrong with the sport.
D.
He had not given any consideration to the dangers of the sport.
相关题目：
【单选题】对于额定工作压力≤1.0MPa的锅炉，锅内加药处理时，锅水总碱度应控制为()。
A.
6～26mmol/L
B.
7～26mmol/L
C.
8～26mmol/L
D.
9～26mmol/L