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【判断题】
modem用来对传输的数字信号进行放大。
A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】It’s just()bite、There is nothing to worry about.
A.
a vessel
B.
a temple
C.
an insect
D.
an arbitrary
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【简答题】It’s just a small, white envelope stuck among the branches of our Christmas tree. No name, no address. It has peeked through the branches of our tree for the past 10 years. It all began because my hus...
查看完整题目与答案
【单选题】It’s just a petty mistake．
A.
maior
B.
important
C.
serious
D.
minor
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【简答题】标签 ( ) 表示它所包围的内容是无序列表标签 , 而 ( ) 表示有序标签。
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【简答题】Why did humans evolve to walk upright? Perhaps because it’s just plain easier. Make that “energetically less costly”, scientifically speaking. Bipedalism—walking on two feet, is one of the defining ch...
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【单选题】It’s just struck midnight. It’s high time we _____to bed.
A.
go
B.
went
C.
should go
D.
would go
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【单选题】—I think I should wear a dress instead of this jeans. —It’s just a small informal party, so you don’t have to ___________.
A.
warm up
B.
put up
C.
dress up
D.
keep up
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【单选题】曲面x2+2y2+3z2=6，在点(1，1，1)处的法线方程为( )。
A.
x-1=y-1=z-1
B.
C.
D.
x+1=y+1=z+1
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【多选题】植物化学保护学是研究科学地应用农药来防治（）、线虫、鼠类等有害生物，保护农、林业生产的一门科学
A.
害虫
B.
害螨
C.
病原菌
D.
杂草
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【单选题】旋转曲面3x2+3y2-z2=1的转轴与母线分别为( )
A.
x轴；xoy面上曲线3x²+3y²=1
B.
y轴；yoz面上曲线3y²-z²=1
C.
z轴；xoy面上曲线3x²+3y²=1
D.
z轴；xoz面上曲线3x²-z²=1
查看完整题目与答案
相关题目：
【单选题】It’s just()bite、There is nothing to worry about.
A.
a vessel
B.
a temple
C.
an insect
D.
an arbitrary
查看完整题目与答案
【简答题】It’s just a small, white envelope stuck among the branches of our Christmas tree. No name, no address. It has peeked through the branches of our tree for the past 10 years. It all began because my hus...
查看完整题目与答案
【单选题】It’s just a petty mistake．
A.
maior
B.
important
C.
serious
D.
minor
查看完整题目与答案
【简答题】标签 ( ) 表示它所包围的内容是无序列表标签 , 而 ( ) 表示有序标签。
查看完整题目与答案
【简答题】Why did humans evolve to walk upright? Perhaps because it’s just plain easier. Make that “energetically less costly”, scientifically speaking. Bipedalism—walking on two feet, is one of the defining ch...
查看完整题目与答案
【单选题】It’s just struck midnight. It’s high time we _____to bed.
A.
go
B.
went
C.
should go
D.
would go
查看完整题目与答案
【单选题】—I think I should wear a dress instead of this jeans. —It’s just a small informal party, so you don’t have to ___________.
A.
warm up
B.
put up
C.
dress up
D.
keep up
查看完整题目与答案
【单选题】曲面x2+2y2+3z2=6，在点(1，1，1)处的法线方程为( )。
A.
x-1=y-1=z-1
B.
C.
D.
x+1=y+1=z+1
查看完整题目与答案
【多选题】植物化学保护学是研究科学地应用农药来防治（）、线虫、鼠类等有害生物，保护农、林业生产的一门科学
A.
害虫
B.
害螨
C.
病原菌
D.
杂草
查看完整题目与答案
【单选题】旋转曲面3x2+3y2-z2=1的转轴与母线分别为( )
A.
x轴；xoy面上曲线3x²+3y²=1
B.
y轴；yoz面上曲线3y²-z²=1
C.
z轴；xoy面上曲线3x²+3y²=1
D.
z轴；xoz面上曲线3x²-z²=1
查看完整题目与答案