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【单选题】
《子》的结构主线是 ( )A.
祥子买车四起四落
B.
祥子与虎妞的婚姻纠葛
C.
祥子与车厂主的矛盾
D.
祥子买车三起三落
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反馈参考答案：
举一反三
【简答题】新建 excel 工作簿的快捷键是 ________
【单选题】He's trained hard for the last two years. It is ______ he did so well at the track and field meet yesterday. [ ]
A.
no problem
B.
no wonder
C.
no doubt
D.
no way
【简答题】阅读理解 Einstein was born in 1879 in Germany. As a child he was slow to talk. But when he was 14 years old, he became clever. He taught himself maths from text books. He studied hard because he wanted to...
【单选题】假设S7-200 PLC堆栈的初始状态如下图所示，那么执行OLD指令后，栈顶值为______。
A.
iv0+iv1
B.
iv0·iv1
C.
iv1·iv2
D.
iv1+iv2
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