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【单选题】
下列关于增加操作员操作，表述错误的是（ ）。A.
操作员编号在系统中必须唯一
B.
所设置的操作人员的姓名必须输入
C.
所设置的操作员一旦被引用，便不能被修改和删除
D.
操作员编号可以不输入
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反馈参考答案：
举一反三
【单选题】I was surprised .
A.
watching him to eat so quickly
B.
watch him eat so quickly
C.
watching him eat so quickly
D.
to watch him eat so quickly
【简答题】A．You're right. B．But if s still early. C．What do you think of it? D．Why are you so late?
【单选题】听力原文：Why are you so late for class today? (2)
A.
You are right.
B.
You don't know the time.
C.
My bike was broken.
D.
I slept 8 hours.
【简答题】I was surprised for you to get married.
【单选题】Tommy, why are you so late today?
A.
Is where anything wrong
B.
Is there anything wrong
C.
Is this anything wrong
【单选题】Why are you so late?（）
A.
It‘s a shame.
B.
I came across an old friend.
C.
Never mind.
D.
That‘s all right.
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