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【单选题】
Genetic drift中文意思是( )
A.
遗传学算法
B.
基因突变
C.
凝胶阻滞
D.
遗传漂变
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举一反三
【单选题】排气再循环系统主要目的是净化排气中的()
A.
CO
B.
NO X
C.
HC
D.
微粒
【单选题】Brunel became an apprentice with his father when he was very young
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】apprentice:
【单选题】You are being thoroughly in refusing to allow your son to be an apprentice to the stonemason.
A.
unpredictable
B.
unthinkable
C.
unreasonable
D.
undesirable
【判断题】三元催化器是安装在汽车排气系统中最重要的机外净化装置
A.
正确
B.
错误
【判断题】三元催化器是安装在汽车排气系统中最重要的机内净化装置。
A.
正确
B.
错误
【简答题】apprentice
【简答题】A) apprentice B) market C) sale D) business
【单选题】Nobody knows what the ______ of the war will be.
A.
development
B.
outcome
C.
expectation
D.
possibility
【单选题】Nobody knows who will be the( )of this city.
A.
mayor
B.
inhabitant
C.
dash
D.
bow