皮皮学，免费搜题
登录
搜题
【多选题】
下列关于标量磁位和矢量磁位的说法,正确的是:
A.
标量磁位只适用于无电流区域，矢量磁位只适用于有电流的区域；
B.
无电流区域中的标量磁位函数满足拉普拉斯方程，但对于矢量磁位，不管区域内是否存在电流，它所 满足的方程为泊松方程；
C.
选定参考点为 p 点，为了空间某点 A 的标量磁位函数具有，则 中的积分路径不 得穿越载流回路所界定的面积，即不得穿越磁障碍面；
D.
对于有电流的区域只能用矢量磁位函数来描述，且为了保证矢量磁位函数 的，其还应满足库 仑规范，即 ；
E.
若空间无电流分布且两媒质的磁导率分别为 μ 1 和 μ 2 ，则分界面处标量磁位函数所满足的边界条件为： ， ， 为垂直于媒质 1 分界面的外法线方向；
F.
若两媒质的磁导率分别为 μ 1 和 μ 2 ，则不管区域内是否存在电流分布，分界面处的矢量磁位函数 所满 足的边界条件恒满足： ， 。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】Our neighbours will (pay attentio to) (loof after) our house when we are away.
A.
pay attentio to
B.
l loof after
C.
\
D.
/
查看完整题目与答案
【单选题】Thanks for ________ the secret ________ me.
A.
keep, for
B.
keeping, for
C.
keep, at
D.
keeping, to
查看完整题目与答案
【简答题】If you want to be a great player, it takes ___ effort.
查看完整题目与答案
【单选题】If you want your ad to be on the home page of the search page, which bid strategy should you choose?
A.
Maximize Clicks
B.
Target Search Page Location
C.
Enhanced Cost Per Click (ECPC)
D.
Target Cost Per Acquisition (CPA)
查看完整题目与答案
【单选题】The chemistry teacher required the students to pay more attention ________ the lab clean. A . to keep B . to keeping C . keeping
A.
to keep
B.
to keeping
C.
keeping
查看完整题目与答案
【简答题】Write a note of about 50 - 60 words based on the following situation: You want to apply for a part-time job as an English teacher in an English summer camp. Write a note to the organizer, Miss Liu, to...
查看完整题目与答案
【单选题】The shortage of supplies is________the price.
A.
keeping off
B.
keeping out
C.
keeping up
D.
keeping from
查看完整题目与答案
【单选题】下列环境问题中属于旅游活动直接造成的是:
A.
珠穆朗玛峰周围的山上已成为一个个荒野垃圾场
B.
菲律宾皮纳图博火山爆发毁掉一些旅游景物
C.
为修黄山索道,仅建白鹅岭站房就毁山7750平方米,砍林48450立方米
D.
厄尔尼诺现象使许多景区出现水旱灾害
查看完整题目与答案
【简答题】On Keeping a Diary in English Keeping a diary in English is one of the effective ways to improve our English writing ability.  Compared with other forms of writing, it is 36 and takes less time. It ca...
查看完整题目与答案
【单选题】If you want to apply for the scholarship, you have to_______this form.
A.
casually
B.
come across
C.
fill out
D.
gave … a … look
E.
in....thirties
F.
couldn’t help
G.
short for
H.
open to
I.
let out
J.
all about his age
查看完整题目与答案
相关题目：
【单选题】Our neighbours will (pay attentio to) (loof after) our house when we are away.
A.
pay attentio to
B.
l loof after
C.
\
D.
/
查看完整题目与答案
【单选题】Thanks for ________ the secret ________ me.
A.
keep, for
B.
keeping, for
C.
keep, at
D.
keeping, to
查看完整题目与答案
【简答题】If you want to be a great player, it takes ___ effort.
查看完整题目与答案
【单选题】If you want your ad to be on the home page of the search page, which bid strategy should you choose?
A.
Maximize Clicks
B.
Target Search Page Location
C.
Enhanced Cost Per Click (ECPC)
D.
Target Cost Per Acquisition (CPA)
查看完整题目与答案
【单选题】The chemistry teacher required the students to pay more attention ________ the lab clean. A . to keep B . to keeping C . keeping
A.
to keep
B.
to keeping
C.
keeping
查看完整题目与答案
【简答题】Write a note of about 50 - 60 words based on the following situation: You want to apply for a part-time job as an English teacher in an English summer camp. Write a note to the organizer, Miss Liu, to...
查看完整题目与答案
【单选题】The shortage of supplies is________the price.
A.
keeping off
B.
keeping out
C.
keeping up
D.
keeping from
查看完整题目与答案
【单选题】下列环境问题中属于旅游活动直接造成的是:
A.
珠穆朗玛峰周围的山上已成为一个个荒野垃圾场
B.
菲律宾皮纳图博火山爆发毁掉一些旅游景物
C.
为修黄山索道,仅建白鹅岭站房就毁山7750平方米,砍林48450立方米
D.
厄尔尼诺现象使许多景区出现水旱灾害
查看完整题目与答案
【简答题】On Keeping a Diary in English Keeping a diary in English is one of the effective ways to improve our English writing ability.  Compared with other forms of writing, it is 36 and takes less time. It ca...
查看完整题目与答案
【单选题】If you want to apply for the scholarship, you have to_______this form.
A.
casually
B.
come across
C.
fill out
D.
gave … a … look
E.
in....thirties
F.
couldn’t help
G.
short for
H.
open to
I.
let out
J.
all about his age
查看完整题目与答案