A small piece of ferromagnetic media (the relative permeability is much greater than 1) is placed in a vacuum uniform magnetic field. Compared with the surrounding magnetic field, the magnetic strength in the media will ________, the magnetic field strength will __________.
A: increase; increase
B: increase; decrease
C: decrease; decrease
D: decrease; increase
A: increase; increase
B: increase; decrease
C: decrease; decrease
D: decrease; increase
举一反三
- An expenditure results either in a(n) ( ) in the asset account or a(n) ( ) in a liability account. A: decrease, decrease B: increase, increase C: increase, decrease D: decrease, increase
- The<br/>magnetic field lines are used to visually describe the distribution<br/>of the magnetic field around the magnet. For the following<br/>statement,( <br/>) is wrong. A: Each<br/>magnetic field line is a closed loop curve B: No<br/>two magnetic field lines can cross each other C: The<br/>length of the magnetic field line reflects the strength of the<br/>magnetic field D: The<br/>tangential direction of any point on any of the magnetic lines is the<br/>direction of the magnetic field at that point
- According to the DLVO theory, if electrolyte (coagulant) is dosed, concentration of ions having same charge with the counter-ions would _____; the electric double layer would be compressed; zeta potential _____; stability _____; thus, colloid coagulation would occur. A: decrease; decrease; decrease B: increase; decrease; decrease C: increase; decrease; increase D: increase; increase; increase
- The purchase of office supplies on account will: （ ）. A: Increase an asset and decrease a liability B: Increase one asset and decrease another asset C: Increase an asset and increase a liability D: Decrease an asset and decrease a liability
- If the demand for orange juice is elastic, then as the price falls, quantity demanded for orange juice will ________ and total revenue for orange suppliers will ________. A: increase; increase B: decrease; increase C: decrease; decrease D: increase; decrease