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【单选题】
无线局域网的英文简写为A.
Vlan
B.
Wlan
C.
Lan
D.
Wifi
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皮皮学刷刷变学霸
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【简答题】下面（ ）组运算符的运算顺序是正确的。
【单选题】听力原文：M: Do you know what Henry's phone number is? W: Oh, Henry's phone number? I don't have my address book on me... hmmm... I can't think of it right off hand. Q: What does the woman mean? (8)
A.
She lost Henry's number.
B.
She forgot to write Henry's number on her hand back.
C.
She doesn't know Henry's number.
D.
She can't remember Henry's number.
【单选题】听力原文：(W—Gene Man—Henry) W: Have you heard the good news, Henry? M: What's that? W: It's going to be cold tonight and tomorrow there will be snow. M: No, I hadn't heard. Why do you think that's good ne...
A.
Gene and Henry can swim.
B.
Gene does not like cold weather.
C.
It is going to snow tomorrow.
D.
Gene has snow tires on his car.
【简答题】下面指数的运算正确的是:A. B. C. D.
【多选题】PLC采用 工作方式，其过程可分为五个阶段： ， ， ， 和 ，称为一个扫描周期。
A.
循环扫描
B.
CPU自诊断
C.
通信处理
D.
输入采样（读输入）
E.
执行用户程序
F.
写输出
【简答题】下面运算符的运算顺序正确的是（ ）。
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