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【单选题】
D级洁净室的换气次数要求是( )次/小时A.
≥45
B.
≥35
C.
≥25
D.
≥20
E.
≥55
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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【简答题】交流电的周期越长,说明交流电变化得越快。()
【单选题】以下语句不可以在屏幕上输出Hello,World语句是()
A.
Console.WriteLine(“Hello”+”,World”);
B.
Console.Write(“Hello{0}”,”World”);
C.
Console.WriteLine(“{0},{1}”,”Hello,World”);
D.
Console.Write(“Hello,World”);
【单选题】听力原文：M: I thought that you were going to the convention in Atlanta last Saturday. You said it many times before. W: I was planning to, but I haven't been feeling well, so I stayed at home and did noth...
A.
In Atlanta.
B.
At a convention centre.
C.
In a hospital.
D.
At home.
【单选题】以下语句不可以在屏幕上输出 AA,BB 语句是( )。
A.
Console.WriteLine(“AA”+”, BB”);
B.
Console.Write(“AA{0}”,” BB”);
C.
Console.WriteLine(“{0},{1}”,”AA, BB”);
D.
Console.Write(“AA, BB”);
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