题干

关于磁场,以下说法正确的是(   )

A:电流在磁场中某点不受磁场力作用,则该点的磁感强度一定为零

B:磁场中某点的磁感强度,根据公式B= FIL ,它跟F,I,L都有关

C:磁场中某点的磁感强度的方向垂直于该点的磁场方向

D:磁场中任一点的磁感强度等于磁通密度,即垂直于磁感强度方向的单位面积的磁通量

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D

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How to enroll if you are in Midhaven…

    We invite you to visit us and see the school. After an assessment you will be able to reserve a place on the next available course. We have two centres in Midhaven.

Deposits/payment

1). Your enrolment form must be accompanied by the course deposit of £100 or, if you are booking accommodation through the school, your course and accommodation deposit of £200.

2). Any balance of course and accommodation fees must be paid in full by the first day of your course.

3). All bank charges incurred (承受) in sending money to Ashwood College must be paid by the student.

4). Deposits and payments are non-refundable and non-transferable.

5). A charge of £20 will be made for any changes made to bookings.

Conditions

Timetable

Each hour consists of 50 minutes' tuition and a 10-minute break.

Public and School Holidays

There is no reduction in the fee where a course includes a Public Holiday, except for two weeks at Christmas.

Age

The above centres of Ashwood College do not accept students under 16 years of age.

Attendance

Students are expected to attend regularly and on time. Students will lose tuition if they arrive late, are absent or leave before the course ends.


Student Holidays

Students on long courses except examination preparation courses may take a holiday of one week every 12 weeks without losing their course fee for this period.

Location and Time of Courses

Ashwood College has two all-year centres and a summer centre in Midhaven. Before entry to the school, students must take an entry test to determine the level of class they enter. We cannot guarantee the time or location of a student's course although every attempt is made to place students in the centre and at the time of their choice.