【单选题】一个磁场的磁感线如图所示,将一个小磁针放入磁场中,则小磁针将()The magnetic flux line of a magnetic field is as shown in the figure. If a small magnetic needle is put into the magnetic field, the small magnetic needle will ( )【图片】
A.
向右移动 Move to the right
D.
逆时针转动turn anticlockwise
【单选题】I read ____ books, but some of them are ____ boring. [ ]
【单选题】The normal to a certain 1-m2 area makes an angle of 60◦ with a uniform magnetic field. The magnetic flux through this area is the same as the flux through a second area that is perpendicular to the fi...
【简答题】ABC会计师事务所接受委托,负责审计上市公司甲公司2011年度财务报表,在接受委托前和审计过程中,ABC会计师事务所遇到下列与职业道德有关的事项: (1)在签订审计业务约定书前,ABC会计师事务所要求对客户的主要股东、关键管理人员、治理层和负责经营活动的人员进行了解。 (2)签订审计业务约定书时,ABC会计师事务所承诺会提供比前任更优质的服务。 (3)事务所委派A注册会计师担任项目负责人,考虑到A...
【单选题】Some kinds of composition are factual. ______kinds of composition allow you to express your own ideas.
【多选题】通电矩形线圈平面垂直于匀强磁场的磁感线,则有( )If the electrified rectangular coil is perpendicular to the magnetic flux line of the uniform magnetic field, then( )
A.
线圈所受安培力的合力为零 The algebraic sum of the magnetic force on the coil is zero
B.
线圈所受安培力以任一边为轴的力矩为零 The torque of the magnetic force on either side of the coil is zero
C.
线圈所受安培力以任一对角线为轴的力矩不为零 The torque of the magnetic force on any diagonal as the axis is not zero
D.
线圈所受安培力必定使其四边有向外扩展形变的效果 The magnetic force on the coil must make its four sides to expand outward
【单选题】There are ___ kinds of reference books in the library.
【单选题】What did the factory produce?
A.
Some kinds of televisions.
B.
Some parts of television.
C.
Several kinds of expensive arms.
D.
Several kinds of machines.
【单选题】It is not mentioned but implied (暗示) that________.
A.
some kinds of electronic equipment are bad for our personal lives
B.
watching too much TV hurts children's eyes
C.
some kinds of electronic equipment cause social problems
D.
television has had effects on both grown-ups and children