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【简答题】
根据分子轨道理论写出O 2 分子电子排布式为______，其中有______个三电子π键。 (σ 1s ) 2 (σ * 1s ) 2 (σ 2s ) 2 (σ * 2s ) 2 (σ 2px ) 2 (π 2py ) 2 (π 2pz ) 2 (π * 2py ) 1 (π * 2pz ) 1 、二
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举一反三
【单选题】Why did Rock come into the room?
A.
He worked there.
B.
He wanted to talk to Roy.
C.
He wanted to have a letter typed.
【简答题】一般微型计算机存储器系统主要由______ 、高速缓冲存储器、辅助存储器及管理它们的硬件与软件组成。
【单选题】Why did the man take the job at the travel agency?
A.
He wanted to go to Spain.
B.
He wanted to work with his friend.
C.
He enjoyed travelling around the world.
D.
He was rejected by the engineering firm.
【单选题】Why did Tom come into the room?
A.
He worked there.
B.
He wanted to talk to Kate.
C.
He wanted to have a letter typed.
【简答题】一般微型计算机存储器系统主要由______、高速缓冲存储器、辅助存储器以及管理这些存储器的硬件和软件组成。
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