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【单选题】
牛,草地放牧6个月后发病,表现消瘦,贫血,被黑色变棕黄色,尿液中甲基丙氨酸和亚氨甲基谷氨酸含量升高。该病最可能的致病原因是(2012 真题下64)
A.
铁缺乏
B.
铜缺乏
C.
钴缺乏
D.
硒缺乏
E.
叶酸缺乏
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举一反三
【单选题】The number of students of this school ____greatly in the last few years.
A.
is increasing
B.
has increased
C.
are increasing
D.
have increased
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【单选题】不开口于中鼻道的鼻旁窦有：( )
A.
额窦
B.
筛窦前、中群
C.
上颌窦
D.
筛窦后群
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【简答题】阅读理解。 Trip 1 Black Bear Count There have been fires in this area in the last few years and the Office of the National Park is not sure how many black bears are still living. Some bears have been seen ...
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【单选题】常用的节流装置的取压方式有( )
A.
角接取压和D与D/2径距取压
B.
法兰取压与径距取压
C.
理论取压和管接取压
D.
角取压和法兰取压
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【简答题】闭合导线,电子版教材P93,第5题
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【简答题】加德纳提出了人类智能中包括的八种相对独立的智能,分别为 _____________ 、_____________、_____________、__________________________、_____________、_____________、_____________。
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【单选题】The international situation has been growing ______ difficult for the last few years.
A.
invariably
B.
presumably
C.
increasingly
D.
dominantly
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【单选题】常用的节流装置的取压方式有
A.
角接取压和径距取压
B.
法兰取压和径距取压
C.
理论取压和管接取压
D.
角接取压和法兰取压
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【简答题】给出如下五个结论: ①存在α∈(0, ),使sinα+cosα= ; ②存在区间(a,b),使y=cosx为减函数而sinx<0; ③y=tanx在其定义域内为增函数; ④y=cos2x+sin( -x)既有最大值和最小值,又是偶函数; ⑤y=sin|2x+ |的最小正周期为π. 其中正确结论的序号是____.
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【单选题】Television advertising has been under constant __________ for the last few years.
A.
symmetry
B.
scrutiny
C.
temperament
D.
orientation
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相关题目：
【单选题】The number of students of this school ____greatly in the last few years.
A.
is increasing
B.
has increased
C.
are increasing
D.
have increased
查看完整题目与答案
【单选题】不开口于中鼻道的鼻旁窦有：( )
A.
额窦
B.
筛窦前、中群
C.
上颌窦
D.
筛窦后群
查看完整题目与答案
【简答题】阅读理解。 Trip 1 Black Bear Count There have been fires in this area in the last few years and the Office of the National Park is not sure how many black bears are still living. Some bears have been seen ...
查看完整题目与答案
【单选题】常用的节流装置的取压方式有( )
A.
角接取压和D与D/2径距取压
B.
法兰取压与径距取压
C.
理论取压和管接取压
D.
角取压和法兰取压
查看完整题目与答案
【简答题】闭合导线,电子版教材P93,第5题
查看完整题目与答案
【简答题】加德纳提出了人类智能中包括的八种相对独立的智能,分别为 _____________ 、_____________、_____________、__________________________、_____________、_____________、_____________。
查看完整题目与答案
【单选题】The international situation has been growing ______ difficult for the last few years.
A.
invariably
B.
presumably
C.
increasingly
D.
dominantly
查看完整题目与答案
【单选题】常用的节流装置的取压方式有
A.
角接取压和径距取压
B.
法兰取压和径距取压
C.
理论取压和管接取压
D.
角接取压和法兰取压
查看完整题目与答案
【简答题】给出如下五个结论: ①存在α∈(0, ),使sinα+cosα= ; ②存在区间(a,b),使y=cosx为减函数而sinx<0; ③y=tanx在其定义域内为增函数; ④y=cos2x+sin( -x)既有最大值和最小值,又是偶函数; ⑤y=sin|2x+ |的最小正周期为π. 其中正确结论的序号是____.
查看完整题目与答案
【单选题】Television advertising has been under constant __________ for the last few years.
A.
symmetry
B.
scrutiny
C.
temperament
D.
orientation
查看完整题目与答案