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【单选题】
在Windows默认环境中,下列4组键中,系统默认的中英文输入切换键是:A.
Ctrl+Alt
B.
Ctrl+Shift
C.
Ctrl+空格
D.
Ctrl+Tab
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反馈参考答案：
举一反三
【简答题】1—29组合
【简答题】2 2×4 + 2 4×6 + 2 6×8 + 2 8×10 + 2 10×12 ．
【简答题】解方程组： 4(x+1)-5(y+1)=29 x 3 + y 4 = 1 2 ．
【简答题】估算下面各题的结果。 （1）12×19≈ （2）29×29≈ （5）99×11≈ （4）42×28≈ （5）89×18≈ （6）42×39≈ （7）31×48≈ （8）18×22≈
【单选题】听力原文：M: You should have seen the line at the housing office. It took me an hour to make my dormitory deposit for next year. Have you made yours yet? W: No, I'm not sure I'm going to. M: There's not mu...
A.
When to move.
B.
Where to live the following year.
C.
How much time to spend at home.
D.
Whose house to visit.
【单选题】听力原文：M: You should have seen the line at the housing office. It took me an hour to make my dormitory deposit for next year. Have you made yours yet? W: No, I'm not sure I'm going to. M: There's not mu...
A.
When to move.
B.
Where to live the following year.
C.
How much time to spend at home.
D.
Whose house to visit.
【简答题】29组+1=
【单选题】听力原文：M: You should have been the in line at the housing office. It took me an hour to make my dormitory deposit for next year. Have you made yours yet? W: No, I'm not sure I'm going to. M: There's not...
A.
when to move
B.
where to live the following year
C.
how much time to spend at home
D.
whose house to visit
【简答题】已知对称三相正弦交流电路中一组△形连接负载的线电压 V,线电流 A,求各相负载的相电压及相电流的相量,作出相量图,并求每相负载的复阻抗。
【多选题】横道图应用范围广泛生命力强,也有一定局限性,应用范围()
A.
应用于复杂的大型项目
B.
应用于一些简单的小型项目
C.
项目初期用于总体规划
D.
上层管理者了解总体计划，用横道图表示
E.
实施者，绘制横道图后输出网络图
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