皮皮学，免费搜题
登录
搜题
【单选题】
如图所示, abcd 为水平放置的平行 “ ” 形光滑金属导轨,间距为 l 。导轨间有垂直于导轨平面的磁场,磁感应强度大小为 B ,导轨电阻不计。已知金属杆 MN 倾斜放置,与导轨成 θ 角,单位长度的电阻为 r ,保持金属杆以速度 v 沿平行于 cd 的方向滑动(金属杆滑动过程中与导轨接 触良好)。则:
A.
电路中感应电动势的大小为
B.
电路中感应电动势的大小为
C.
金属杆所受的大小为
D.
金属杆的热功率为
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】在 Excel 2010 中,工作表单元格内输入和处理的数据必须是( )
A.
文字
B.
数值
C.
公式
D.
以上都可以
查看完整题目与答案
【单选题】Recently I have bought an iPad on the website of taobao.com, _______ the price is very reasonable.
A.
which
B.
whose
C.
on which
D.
of which
查看完整题目与答案
【单选题】The three workers from CityWatcher.com have ______.
A.
volunteered to provide security camera equipment
B.
offered to be monitored in the new security program
C.
agreed to have silicon chips planted in their brain
D.
had access to secure areas of their workplace
查看完整题目与答案
【简答题】30 percent of the studentswho (interview) ________ yesterday believethey should continue with their education until they have a university degree.
查看完整题目与答案
【简答题】A．predicts B．discovers C．demonstrates D．estimates
查看完整题目与答案
【简答题】What form. will we have to fill in when buying a car at 'Autoweb. com'? A ______.
查看完整题目与答案
【判断题】在Excel2003中工作表内长方形空白，用于输入文字、公式的位置称为单元格。
A.
正确
B.
错误
查看完整题目与答案
【单选题】You work as a network Exchange administrator at Company.com.The Company.com network  currently consists of a single Active Directory forest containing a single domain named Company.com.The Company.com...
A.
You should consider having a new mail contact created which has the e-mail address KingPublic@Company.com.You should then have a transport rule created.
B.
You should consider having a new mailbox created which has the e-mail address KingPublic@Company.com.You should then have a transport rule created.
C.
You should consider having mail enabled for KingPublic.
D.
You should consider having the author role assigned to Anonymous.
查看完整题目与答案
【单选题】I (have been) told that he (will have come) if he (were) (able).
A.
have been
B.
will have come
C.
were
D.
able
查看完整题目与答案
【单选题】He is the only one of the studentswho          a winner of scholarshipfor three years.
A.
is      
B.
are       
C.
havebeen       
D.
has been
查看完整题目与答案
相关题目：
【单选题】在 Excel 2010 中,工作表单元格内输入和处理的数据必须是( )
A.
文字
B.
数值
C.
公式
D.
以上都可以
查看完整题目与答案
【单选题】Recently I have bought an iPad on the website of taobao.com, _______ the price is very reasonable.
A.
which
B.
whose
C.
on which
D.
of which
查看完整题目与答案
【单选题】The three workers from CityWatcher.com have ______.
A.
volunteered to provide security camera equipment
B.
offered to be monitored in the new security program
C.
agreed to have silicon chips planted in their brain
D.
had access to secure areas of their workplace
查看完整题目与答案
【简答题】30 percent of the studentswho (interview) ________ yesterday believethey should continue with their education until they have a university degree.
查看完整题目与答案
【简答题】A．predicts B．discovers C．demonstrates D．estimates
查看完整题目与答案
【简答题】What form. will we have to fill in when buying a car at 'Autoweb. com'? A ______.
查看完整题目与答案
【判断题】在Excel2003中工作表内长方形空白，用于输入文字、公式的位置称为单元格。
A.
正确
B.
错误
查看完整题目与答案
【单选题】You work as a network Exchange administrator at Company.com.The Company.com network  currently consists of a single Active Directory forest containing a single domain named Company.com.The Company.com...
A.
You should consider having a new mail contact created which has the e-mail address KingPublic@Company.com.You should then have a transport rule created.
B.
You should consider having a new mailbox created which has the e-mail address KingPublic@Company.com.You should then have a transport rule created.
C.
You should consider having mail enabled for KingPublic.
D.
You should consider having the author role assigned to Anonymous.
查看完整题目与答案
【单选题】I (have been) told that he (will have come) if he (were) (able).
A.
have been
B.
will have come
C.
were
D.
able
查看完整题目与答案
【单选题】He is the only one of the studentswho          a winner of scholarshipfor three years.
A.
is      
B.
are       
C.
havebeen       
D.
has been
查看完整题目与答案