A:将剩余的药品放回原瓶
B:被加热的物质放在酒精灯的内焰部分加热
C:向燃着的酒精灯内添加酒精
D:称量药品时用镊子夹取砝码
( )
下列事例中,属于减小摩擦的是( )
—I want to make a kite to fly.
—________You can easily buy one at the market.