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【单选题】
原子核外电子的运动具有二象性,指的是:波动性和 ( ) 。A.
磁性
B.
自旋性
C.
钻穿性
D.
粒子性
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举一反三
【单选题】下面有关锚链舱的说法正确的是________。
A.
锚链舱应设置在防撞舱壁之后部
B.
锚链舱应设置在锚机后面
C.
锚链舱应设置在首尖舱的下面或前面
D.
锚链舱应设置污水井和排水管系
【单选题】What do we learn about the man?
A.
He is an honest, flexible and easy-going person.
B.
He has just been fired.
C.
He worked once.
【简答题】阅读短文，判断正误（正“T”，误“F”） Tom Davies is not old, but he does not have much hair (头发). His wife Grace has thick, beautiful, black hair. Mr and Mrs Davies have one daughter. Her name is Jane, and she is four...
【简答题】阅读短文，判断正误。(正A、误B) Sam gets up at six in the morning. He has breakfast at home. He goes to school at seven. He has lunch at school, but on Sundays he has lunch with his family. He often has supper at h...
【单选题】He is ________ honest man and he has been waiting for over ______ hour.
A.
a; a
B.
an; a
C.
a; an
D.
an; an
【简答题】正误与反误
【单选题】--He has been late for class three times this week. -- ________________He is a punctual student.
A.
It is possible.
B.
To be honest.
C.
Believe it or not.
D.
It's not like him!
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