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【判断题】
TTL与非门多余的输入端可以接高电平、悬空或同其它的一端并在一起使用。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】While browsing, the mind is _________ and _________; while searching, it is ________ and _______.
A.
exploratory and focused; curious and purposeful
B.
exploratory and curious; focused and purposeful
C.
curious and focused; exploratory and purposeful
D.
curious and purposeful; exploratory and focused
【简答题】While browsing, the mind is _____ and _____ ; while searching, it is _______ and ________ .
【简答题】Until yesterday, his family (not hear) from him for three years.A. hadn’t heard
【单选题】病人，男性，55岁，患肝硬化7年。病人主述乏力、食欲减退。查体：神清，轻度黄疸，肝脾轻度肿大，移动性浊音（+）。胃镜示食管胃底静脉重度曲张。不适合该病人的饮食是
A.
高热量饮食
B.
高蛋白饮食
C.
适量脂肪饮食
D.
低盐，适量限水
E.
多食富含纤维的粗粮
【单选题】垄断条件下的利润率平均化规律( )
A.
规律已消失
B.
只存在垄断部门，不存在于非垄断部门
C.
只存在于非垄断部门，不存在于垄断部门
D.
在垄断和非垄断部门起作用
【单选题】Not until yesterday ____ his mind.
A.
he changed
B.
he didn ’ t change
C.
he did change
D.
did he change
【单选题】Until yesterday, his homework had not________finished.
A.
being
B.
be
C.
been
D.
to be
【单选题】____ for a bus, I was reading a magazine.
A.
While was waiting
B.
While I waiting
C.
While I am waiting
D.
While waiting
【单选题】Browsing Flickr and similar sites shows that______.
A.
people do not care to be caught while browsing through other's pics
B.
people worry about uploading those personal albums
C.
people can make better arrangement of their own wedding
D.
people flick through other's photo to stimulate their own emotion
【单选题】It was not until yesterday evening the manager made his decision known.
A.
when
B.
that
C.
as
D.
so
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