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【简答题】
以下填空均填写“正确”或“错误”。如图所示是一根很长的长直圆导体的横截面,内、外半径分别为 , ,导体内载有沿轴线方向的电流 ,且 均匀地分布在管的横截面上,设导体的磁导率 。建立以O为圆心r为半径的圆形闭合回路,计算该闭合回路的积分 ,此积分结果( );当 时, , ( );当 时, ,得 ( );当 时, , ( )
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【单选题】We will do all we can ______ English well this term.
A.
to learn
B.
learn
C.
learning
D.
learnt
【简答题】Although we all know it is good to do international trade between countries，we still have to face some risks while doing international trade．Such risks mainly include economic risks and（ ）．
【简答题】We take this opportunity to re-emphasize that we shall, at all times, do everything possible to give you whatever information you desire.
【单选题】The reasons why we lie are all of the following EXCEPT that______.
A.
we intentionally do so
B.
no one tells us how to live in truth
C.
we are afraid to lose the one we love
D.
no one permits us to know our real self
【简答题】某小区居住在十层的业主顾某,擅自将其购买并居住的房屋 “一卫改两卫”。在房屋的储藏室内擅自安装了电动抽水马桶、洗脸盆,改变废水立管的下水三通,致使楼下业主王某储藏室内的储柜及物品受损。请问假如你是该小区的项目经理,物业管理部门是否有权责令其拆除私装物,为什么 ?
【简答题】N沟道场效应管的漏极电流由【】的漂移运动形成。
【单选题】计算机输入图像,会把图像划分成一个个单一颜色的点组成矩形方阵。比方640*480的图像,就表示这幅图像是由640*480=307200个像素点组成,这是图像数字化过程中的( )。
A.
采样
B.
量化
C.
编码
【单选题】_____is known to us all is that we should do as much as we can ______ stop the pollution of the environment.
A.
It; help
B.
What; to help
C.
As ; to help
D.
That ; help
相关题目：
【单选题】We will do all we can ______ English well this term.
A.
to learn
B.
learn
C.
learning
D.
learnt