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【单选题】
555定时器构成的施密特触发器的特点是（ ）。A.
没有稳态
B.
有一稳态和一个暂稳态
C.
有两个稳态
D.
有两个暂稳态
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反馈参考答案：
举一反三
【单选题】It is important to note that ______.
A.
citizenship and residency are the same thing from the viewpoint of the balance of payments statistics
B.
citizenship and residency are almost the same thing from the viewpoint of the balance of payments statistics
C.
citizenship and residency are indeed the same thing from the viewpoint of the balance of payments statistics
D.
citizenship and residency are not necessarily the same thing from the viewpoint of the balance of payments statistics
【单选题】The colour of her dress is _______ that of mine. [ ]
A.
the different from
B.
the same from
C.
same as
D.
different from
【简答题】垂体高度的测量方法及诊断标准。
【单选题】听力原文：W: The problem is that I don’t get paid until tomorrow, but I must register for Dr. Smith’s class. Could you hold a place for me until tomorrow? M: I’m sure you know that we are not permitted to ...
A.
Dr. Smith's class is already full.
B.
The reserved spaces are for faculty only.
C.
He will give the student a chance after she waits a while.
D.
No exceptions can be made with regard to registration policy.
【简答题】The d______ from here to the town is mush the same by either of the roads.
【单选题】垂体高度测量方法是
A.
横断层上自鞍背中点至鞍结节中点
B.
冠状层上自鞍底上缘至腺体上缘
C.
冠状层上自鞍底下缘至腺体上缘
D.
矢状层上自鞍底上缘至腺体上缘
E.
矢状层上自鞍底下缘至腺体上缘
【简答题】函数用于将数据从逻辑层异步发送到视图层。
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