Microwave oven uses electromagnetic wave to heat food. Suppose the space inside the oven can be treated as free space. If the electric field at point P in the oven is measured to be [img=144x45]18033d924610386.png[/img], then the magnetic field at point P at the same moment is B=_________T.
Microwave oven uses electromagnetic wave to heat food. Suppose the space inside the oven can be treated as free space. If the electric field at point P in the oven is measured to be [img=144x45]18033d924610386.png[/img], then the magnetic field at point P at the same moment is B=_________T.
Did you find out ______ the cake out of the oven?
Did you find out ______ the cake out of the oven?
Using a microwave oven to heat up or cook food is time-saving.
Using a microwave oven to heat up or cook food is time-saving.
Ignoring the__________ ring, she put the chicken in the oven and closed the door.
Ignoring the__________ ring, she put the chicken in the oven and closed the door.
Heat the meat . A: in a bowl B: in a colander C: in the oven D: in a frying basket
Heat the meat . A: in a bowl B: in a colander C: in the oven D: in a frying basket
How to Use itThis new (1) ______ cleaner is different from others.·Spray the oven thoroughly.·Leave the door closed and turn it on to (2) ______ degrees.·Leave the oven on for (3) ______.·Let it cool down.·(4) ______ the dirt with a wet cloth. 4（）
How to Use itThis new (1) ______ cleaner is different from others.·Spray the oven thoroughly.·Leave the door closed and turn it on to (2) ______ degrees.·Leave the oven on for (3) ______.·Let it cool down.·(4) ______ the dirt with a wet cloth. 4（）
What is the problem?Even after the high-power cooking period, the food in the microwave oven still ________________.
What is the problem?Even after the high-power cooking period, the food in the microwave oven still ________________.
中国大学MOOC: 2. We b______ cake or bread in an oven at a quite high temperature.
中国大学MOOC: 2. We b______ cake or bread in an oven at a quite high temperature.
They had just moved in, so they needed to buy a number of kitchen ____, including a microwave oven, a toaster, and a coffee maker.
They had just moved in, so they needed to buy a number of kitchen ____, including a microwave oven, a toaster, and a coffee maker.
She brought back the faulty microwave oven to ______ the claim of the adviser. A: contradict B: reverse C: refute D: rectify
She brought back the faulty microwave oven to ______ the claim of the adviser. A: contradict B: reverse C: refute D: rectify