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【单选题】
函数在区间 上连续,并且在 上仅有唯一的极值点,若此点是函数的极大值点,则此点是否是函数在 上的最大值点。A.
一定是
B.
不一定是
C.
一定不是
D.
以上都不对
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反馈参考答案：
举一反三
【单选题】U207 It is lamentable that Cassidy will not get to coach his team next season.
A.
disgusting
B.
discouraging
C.
disappointing
D.
distressing
【单选题】Ag scientists tout this application of gene editing as a more humane form of farming because it spares male Holstein cows from a gruesome procedure during which dairy farmers physically gouge out and ...
A.
gives something of which one has enough to someone
B.
tries to satisfy one’s own comfort or needs
C.
is unwanted or not needed and therefore available for use
D.
refrains from killing, injuring, or distressing
【简答题】热固性塑料保压压力和保压时间怎样？
【单选题】School shootings across the country continue to discuss the story of the student who is outcast by fellow peers and decides to lash out. These reports may leave some wondering if ostracism is a legiti...
A.
the problem of distressing experienced by school students
B.
the phenomenon of some students being excluded by peers
C.
the violence happening on campus witnessed by students
D.
the issue of some students unwilling to communicate with peers
【单选题】三角形联结的对称三相负载,每相电阻为8Ω,感抗为6Ω,由相电压为220V星形连接的三相电源供电,则负载相电流为________。
A.
66A
B.
38A
C.
31A
D.
22A
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