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【简答题】
如图所示，边长为a和b，载有电流I的小矩形回路。 (1) 求远处一点P(x，y，z)的矢势A，证明它可以写成如下形式 式中m是载流小矩形回路的磁矩。 (2) 由矢势A计算磁场B。
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反馈参考答案：
举一反三
【单选题】若一个表达式中含有多个运算符时,首先要明确表达式中各个运算符参与运算的先后顺序,我们把这种顺序称为运算符的( )。
A.
选择权
B.
优先级
C.
先后顺序
D.
选择顺序
【简答题】"*"称为( )运算符,"&"称为( )运算符。
【单选题】I told him a couple of rumors that I’d heard and his response was ____________ with laughter and later ____________ other friends.
A.
roaring; tell
B.
roar; to tell
C.
roared; told
D.
to roar; tell
【简答题】在 C 语言中 , 加减乘除这些运算符需要两个运算对象,称为 运算符。
【简答题】在C语言中,加减乘除这些运算符需要两个运算对象,称为 运算符。
【简答题】We're going to land on Mars in 2027. And the reason is this man is determined to make that happen. His name is ______, he's the CEO of Tesla Motors and SpaceX. Now, he actually told me that we would l...
【简答题】The S tart of M y P assion for F ootball One summer morning, my cousin Eddie asked me if I wanted to play football with some of his friends. He got mad because I gave him a confused look, and said I d...
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