Plane geometry is xy coordinate system and solid geometry is xyz coordinate system. There are more third parties suggesting that she has a boyfriend

Why didn't Napoleon use Italy in the axis of the air force at the Battle of Waterloo? He hardly helped Germany in World War II-he could be a dispensable third party.

Were there planes in Napoleon's time-I have no such experience.

You know the importance of Lexington to American independence. -We can try Lexington's first shot in the American Revolution.

In the consumption classification of economics, what else is there besides self-sufficient consumption? Business consumption-it's okay to have a lens, but you have to pay.

Surrounding cities from rural areas was put forward by Mao Zedong as the representative-I have plenty of money.

Ampere rule is the full name of right-handed spiral rule-can I serve with my hand?

When producing ethylene with ethanol, the position of thermometer should not be sloppy. -Be sure to put it in the water

It is said that the southeast wind on the west coast of Peru has been going on for three months. Known as El Nino-an extremely dangerous natural phenomenon-I am now in a critical period.

The correct way to put out the alcohol lamp is to put an alcohol lamp cap on him-I can wear a condom.

Then let's go.