To prevent fires: DO NOT smoke in bed. Keep matches and other flammable materials of the reach of children. A. on B. in C. of D. out 相关知识点: 试题来源: 解析 D 考查介词。根据短语out of reach表示“够不着”。故填out。【句意】防止火灾:不要在床上吸烟。把火柴和其他易燃物品放在...
The piston moves back up the cylinder and compresses (squeezes) the fuel-air mixture, which makes it much more flammable. When the piston reaches the top of the cylinder, the sparking plug (yellow) fires. Power: The spark ignites the fuel-air mixture causing a mini explosion. The fuel ...